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                                                                   EXHIBIT 10.21
                             SPONSORSHIP AGREEMENT

     THIS AGREEMENT, dated for reference purposes as of July 12, 1999 (the
"Agreement"), is by and between FOOTBALL NORTHWEST LLC, a Washington limited
liability company ("FNW") and MERCATA, Inc., a Delaware corporation ("Sponsor").

                                R E C I T A L S
                                ---------------

     A.  Pursuant to that certain Consent to Assignment and Amendment of Use
Agreement dated January 7, 1997, as amended, between King County, Washington
("King County") and FNW, FNW is granted the exclusive right to and revenue from
all advertising both inside and outside the King County Domed Stadium (the
"Kingdome") and the Kingdome Pavilion, including on adjacent parking lots.

     B.  The Kingdome is located in Seattle, Washington and currently serves as
the home venue for the National Football League ("NFL") franchise for the
Seattle Seahawks.

     C.  FNW owns and, during the term of this Agreement, FNW or its successor
or assign will retain the exclusive signage and advertising rights for the
Kingdome.

     D.  Sponsor desires to acquire from FNW certain sponsorship rights in the
areas described below and FNW is vested with the authority to grant and desires
to grant such rights to Sponsor in accordance with the terms and provisions of
this Agreement.

     NOW, THEREFORE, in consideration of the foregoing and for other good and
valuable consideration, receipt of which is hereby acknowledged, the parties
hereby agree as follows:

1.  Sponsorship Benefits.  Sponsor shall during the term of this Agreement
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receive the following sponsorship benefits:

          A. Television

             1. Three (3) :30 second Sponsor produced commercials ("Concept
                Ads") to air within each of three (3) preseason telecasts.
             2. Three (3) :30 second Seahawks produced commercials ("Products
                Ads") to air within each of three (3) preseason telecasts.
                Content shall be reviewed and approved by Sponsor.  Shawn
                Springs will be featured in the commercial.
             3. Opening/closing billboards in each of three (3) Seahawks
                preseason games including Sponsor logo.
             4. Sponsorship of one (1) feature ("Instant Replay") in three (3)
                preseason games including billboard and Sponsor logo visual.
                Total of three (3) features, billboards and logo
                identifications.
             5. Three (3) Sponsor logo exposures in the Hawk Box Scoreboards per
                quarter during three (3) preseason games.
             6. Sponsor a minimum of three (3) "live" power buy announcements
                ("Live Ads") during the course of three (3) telecasts.
                Announcement format to be determined.
             7. Production: Seahawks will cover all hard costs to create, direct
                and produce one (1) :30 second TV spot to be used in three (3)
                preseason telecasts.  Sponsor

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                will provide creative direction for the production and shall
                have the right to use such commercial where appropriate in its
                general advertising campaign or within certain promotional
                material during the 1999 season.
             8. The sequence of TV appearance should always be:
                .  FIRST appearance: Concept Ad (before last commercial series
                   prior to a break)
                .  SECOND appearance: Products Ad (last commercial series prior
                   to a break)
                .  THIRD appearance:  Live Ad (during the break)
                   One sequence per quarter from 1st to 3rd quarter.

          B. Kingdome Promotion/DiamondVision

             1. Two (2) DiamondVision announcements per game for three (3)
                games.  Total of six (6) DiamondVision announcements.  Content
                will have to be reviewed and approved by Sponsor.
             2. Sponsor opportunity to run :30 second television spot on
                DiamondVision during pregame warm-ups for three (3) preseason
                games.  Total of three (3) spots
             3. Sponsor (Promotional) road trip for two (2) including airfare,
                hotel and game tickets.  Must participate in Sponsor/Seahawks
                Sweepstakes to be eligible for road trip.  Designated road trip:
                Seattle @ Chicago on September 19, 1999.  The value of this
                package is less $5,000 and shall be provided by FNW.

          C  Seahawks.com

             1. One (1) rotating banner ad on Seahawks.com for sixty (60) days
                (August through September 1999) Extension beyond the sixty (60)
                days to offered to Sponsor at favorable cpm based rate.
             2. Seahawks to promote Sponsor online store from Seahawks.com's
                front page by providing a graphic and a text link directing
                visitors to Mercata.com.  Text and graphics to be provided by
                Sponsor, and reviewed and approved by Seahawks.com.
             3. Sponsor acknowledgement on Seahawks Television network web page
                on Seahawks.com
             4. Sponsor will feature an online Seahawks-themed store selling
                Seahawks merchandising at Mercata.com.

          D. VIP Benefits

             1. Two (2) season tickets with option to purchase two (2) playoff
                tickets
             2. Twenty (20) tickets to two (2) preseason home games, August 14
                and August 28, 1999.
             3. One half-page color ad in Seahawks Insider for the 1999 season.
                Deadline for ad July 23, 1999.  If Sponsor cannot meet the
                deadline, Seahawks will provide similar opportunity to be
                determined (i.e.: letter to season ticket holders introducing
                Mercata).
             4. One (1) trip for two (2) to Training Camp.  Includes
                transportation, hotel and entertainment
             5. One "Advertorial" in first pre-season issue of NFL Insider to
                explain the Mercata 'story' and groundbreaking partnership with
                the Seahawks (Mercata to write and provide advertorial).
             6. Mercata's use of Seahawks trademarks for promotional purposes
                extends throughout the 1999 season.

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2. Term.  The term of this Agreement shall commence on July 19, 1999 and shall
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   thereafter continue until all above described Sponsor benefits are completed,
   but in no event beyond the end of the 1999 season (the "Term").  This
   Agreement is noncancellable by either party except for termination in
   accordance with Paragraph 7, below, and may be mutually extended by written
   agreement of the parties.

3. Consideration.  In consideration of the sponsorship rights and other services
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   and products granted and provided to Sponsor by FNW hereunder, Sponsor hereby
   agrees to pay FNW a sponsorship fee in the amount of Forty thousand Dollars
   ($40,000 net) (the "Sponsorship Fee").

   3.1. Invoices and Payment.  FNW will send Sponsor invoices Sponsorship Fee in
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        two (2) monthly installments beginning September 1, 1999. Invoices are
        payable thirty (30) days after receipt. A five percent (5%) late fee
        will be added to all invoices which become past due and interest at a
        rate of twelve percent (12%) per annum will be charged on all balances
        not paid within thirty (30) days of the date they are due.

4. Sponsor's Content and Design.  The content and design of Sponsor's creative
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   material shall be within the discretion of Sponsor.  However, if FNW objects
   to any such material when it is provided or thereafter, it shall notify
   Sponsor as soon as possible and Sponsor shall take prompt action to address
   FNW's concerns.

5. Trademarks
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   5.1. Use of Sponsor's Trademarks.  FNW shall not, by this Agreement, obtain
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        any right, title or interest in the trademarks or other proprietary
        property of Sponsor, nor shall this Agreement give FNW the right to use,
        refer to, or incorporate in marketing or other materials the name,
        logos, trademarks, designs, identifications, or copyrights of Sponsor in
        any manner except as authorized by Sponsor. Sponsor acknowledges that
        FNW and parties conducting events within the Kingdome may televise,
        videotape, or take still photographs of events occurring in the
        Kingdome. Sponsor hereby consents to the commercial exploitation of such
        television broadcasts, video tapes and still photographs notwithstanding
        the fact that the content and design of Sponsor's images may be visible
        in such television broadcasts, video tapes and still photographs.

   5.2. Use of FNW and Seattle Seahawks Trademarks.  Sponsor shall not, by this
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        Agreement, obtain any right, title or interest in the trade names or
        trademarks of FNW, the Seattle Seahawks, the NFL, NFL Enterprises, L.P.,
        NFL Properties, Inc. or any affiliate of such, nor shall any such
        agreements give Sponsor the right to use, refer to, or incorporate in
        marketing or other materials the names, logos, trademarks, designs,
        identifications or copyrights of FNW, the Seattle Seahawks, the NFL, NFL
        Enterprises, L.P., and NFL Properties, Inc. without the prior written
        approval of FNW, which approval may be withheld in FNW's reasonable
        discretion. Sponsor may use Seahawks trademarks for promotional purposes
        as necessary to convey the Sponsor benefits described herein. However,
        all such rights shall expire at the end of the 1999 regular season.

6. Indemnification.  FNW agrees to defend, indemnify and hold Sponsor harmless
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   from and against all claims, suits, liabilities, costs and expenses,
   including reasonable attorney costs and fees, for injury to, including death
   of, persons (whether they be third persons or employees of either of the
   parties hereto) or any loss of or damage to property in any manner arising
   from or relating to the rights

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   conveyed herein, with the understanding that this obligation shall not apply
   to, and Sponsor agrees to defend, indemnify and hold FNW and its officers,
   directors, employees and agents harmless from and against, all losses,
   claims, suits, demands, actions, liabilities, costs and expenses, including
   reasonable attorney costs and fees, for injury to, including death of,
   persons (whether they be third persons or employees of either of the parties
   hereto) or any loss of or damage to property in any manner arising from the
   content of any advertising copy supplied by Sponsor or the negligence or
   intentional misconduct of Sponsor or its officers, employees or agents.

7. Termination.  FNW and Sponsor shall each have the right but not the
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obligation to terminate this Agreement upon forty-five (45) days prior written
notice, without further liability except as otherwise provided by this Paragraph
7 if any of the following shall occur:

            (a) Damage to or destruction of the Kingdome to the extent that the
                Kingdome is closed for a period of greater than thirty (30)
                days, in which case the refund provisions of this Paragraph 7
                shall apply.

            (b) The cancellation or termination of FNW's NFL franchise or the
                relocation of FNW's NFL franchise to a location more than 50
                miles from Seattle, Washington.

            (c) The other party materially defaults in the performance of its
                material obligations under this Agreement and such other party
                fails to correct such breach within thirty (30) days of written
                notice.

       If this Agreement is so terminated by Sponsor, Sponsor shall be entitled
to a pro rata refund of any payments under this Agreement.

8. Remedies
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     8.1  Generally.  In the event that either party fails to fully comply with
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     any of its obligations under this Agreement, the other party shall be
     entitled to all remedies set forth in this Agreement and, except as
     otherwise provided herein, all remedies otherwise available at law or in
     equity.

     8.2  Limitation on Damages.  In no event shall either party be liable for
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     any special, incidental or consequential damages arising out of or in
     connection with this Agreement or the performance thereof.  FNW's liability
     for any breach of this Agreement shall be strictly limited to refunding to
     Sponsor that portion of any consideration paid by Sponsor for which Sponsor
     has not received the rights granted to it herein.

9. Limitations.  This Agreement is subject to the Constitution and Bylaws and
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    other rules and regulations of the NFL, the statutes and regulations of the
    State of Washington, and the ordinances and rules of King County, Washington
    and the City of Seattle, Washington as they presently exist or as they may
    from time-to-time be amended, including without limitation, any rule or
    regulation of the NFL or any agreement to which the NFL is a party which
    restricts the visibility of signage within the Kingdome during NFL games
    which are televised nationally.  The obligations of either party to perform
    under this Agreement shall be excused if such failure to perform or any
    delay is caused by matters such as acts of God, strikes, lockout, work
    stoppage, picketing, damage or concerted action by any employee or labor
    organization, civil commotion, riots, war, acts of government, or any other
    cause whether similar or dissimilar to those enumerated which are reasonably
    beyond the control of the party obligated to perform.  Upon the occurrence
    of such

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    event, the duties and obligations of the party shall be suspended for the
    duration of the event preventing performance.

10. Entire Agreement.  The entire agreement between the parties pertaining to
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    the subject matter of this Agreement is incorporated into this document.
    This Agreement may not be modified or amended except by a writing duly
    executed by the parties hereto.  This Agreement supersedes any and all prior
    agreements and understandings between the parties.

11. Successor Interests.  Neither this Agreement nor any of the rights or
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    obligations of either FNW or Sponsor hereunder may be assigned, transferred
    or conveyed by operation of law or otherwise by either party, nor shall such
    agreements or rights inure to the benefit of any trustee in bankruptcy,
    receiver, creditor, or trustee of either party's business or its properties
    whether by operation of law or otherwise, except with the prior written
    consent of the other party, which consent shall not be unreasonably
    withheld, and the delivery of a written document in which the assignee
    assumes all of the obligations of the assigning party and the assigning
    party acknowledges that it will continue to be bound to such obligations if
    not performed by the assignee.  For purposes of this Paragraph 11, the
    transfer of a fifty percent (50%) or greater ownership interest in a party
    shall be deemed to be an assignment of this Agreement.  Notwithstanding the
    foregoing, no assignment or attempted assignment by Sponsor shall be valid
    except to a party which intends to continue the business of Sponsor as
    presently conducted.  Sponsor does hereby consent to any transfer or
    assignment by FNW of its rights under this Agreement to an affiliate of FNW
    without any additional prior consent of Sponsor.  Subject to the foregoing,
    this Agreement shall be binding upon and shall inure to the benefit of all
    successors and assigns of the parties.

12. Confidentiality.  Each of the parties deems the provisions of this Agreement
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    to be confidential and proprietary in nature.  FNW and Sponsor each agree
    that the terms of this Agreement will be kept confidential and will not be
    disclosed in any manner whatsoever, in whole or in part, by either party
    without the prior written consent of the other party except to the extent
    necessary for such party to enforce its rights under this Agreement or as
    either party may be advised by its legal counsel that it is obligated to
    disclose the terms of such agreements.  Moreover, each party agrees to
    disclose the terms of this Agreement only to its respective officers,
    employees, agents and representatives who need to know of such terms and who
    agree to be bound by the confidentiality terms of this Paragraph.  Each
    party shall be responsible for any breach of this Paragraph by its
    respective officers, employees, agents and representatives.  The terms of
    this Paragraph shall survive the expiration or termination of this Agreement
    for whatever reason for a period of three (3) years after such expiration or
    termination.  Notwithstanding the foregoing, FNW may disclose the terms of
    this Agreement to King County, Washington and to lenders, legal counsel, and
    financial advisors.

13. Washington Law.  This Agreement shall be deemed to have been made in the
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    state of Washington and shall be construed in accordance with the laws of
    the state of Washington.  The exclusive venue for any suits or actions
    arising out of this Agreement shall be in the Superior Court for the State
    of Washington for King County or in the United States District Court for the
    Western District of Washington.

14. Notices.  All notices under this Agreement shall be in writing and shall be
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    deemed to have been duly given if personally delivered, sent by telecopier,
    sent by overnight courier service or sent by registered or certified mail,
    postage prepaid, and shall be deemed given upon the earlier of actual


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    receipt or one day after it is sent, if sent by overnight courier, or three
    days after it is sent by registered or certified mail.  All notices or other
    communications shall be made as follows:

       To FNW:           11220 N.E. 53rd Street
                         Kirkland, WA 98033
                         Attn:  Scott Patrick
                         V.P./Corporate Sales

       With a Copy to:   Richard E. Leigh, Jr.
                         Vice President/General Counsel
                         110 - 110th Ave. N.E., Suite 550
                         Bellevue, WA 98004

       If to Sponsor.    Jerome Pache, Director Business Development
                         Leslie Wallis, General Counsel
                         MERCATA, Inc.
                         110 110th Avenue NE
                         Bellevue, WA 98004-5840

15. Arbitration.  Any controversy or claim arising out of or relating to this
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    Agreement, including, but not limited to a claim based on or arising from an
    alleged tort will, at the request of any party be determined by arbitration
    in accordance with the Federal Arbitration Act (9 U.S.C. Section 1, et seq.)
    under the auspices and rules of the American Arbitration Association
    ("AAA").  The AAA will be instructed by either or both parties to prepare a
    list of judges who have retired from the Superior Court of the State of
    Washington, a higher Washington court or any federal court.  'Within 10 days
    of receipt of this list, each party may strike one name from the list.  The
    AAA will then appoint an arbitrator from the name(s) remaining on the list.
    The arbitration will be conducted from Seattle, Washington.  Any controversy
    in interpretation or enforcement of this provision or whether a dispute is
    arbitrable, will be determined by the arbitrators.  Judgment upon the award
    rendered by the arbitrator(s) may be entered in any court having
    jurisdiction.  The institution and maintenance of an action for judicial
    relief or in pursuit of an ancillary remedy, does not constitute a waiver of
    the right of any party, including the plaintiff, to submit the controversy
    or claim to arbitration.

16. Attorneys' Fees.  In the event any suit or action is brought or an
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    arbitration or bankruptcy proceeding is initiated (including, without
    limitation, appeals of the foregoing) to enforce or interpret any of the
    provisions of this Agreement, or which is based thereon, the prevailing
    party shall be entitled to reasonable attorney fees in connection therewith.
    The determination of who is the prevailing party and the amount of
    reasonable attorney fees to be paid to the prevailing party shall be decided
    by the court or courts, including any appellate court, in which such matter
    is tried, heard or decided, including the court which hears any exceptions
    made to an arbitration award submitted to it for confirmation as a judgment
    (with respect to attorneys' fees incurred in such confirmation proceedings),
    or by the arbitrator(s) (with respect to attorneys' fees incurred prior to
    and during the arbitration proceedings), as the case may be.

17. Relationship of Parties.  The parties are acting herein as independent
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    contractors and independent employers.  Nothing herein contained shall
    create or be construed as creating a partnership, joint venture or agency
    relationship between the parties and no party shall have the authority to
    bind the other in any respect.

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18. Agreement Approval.  Each party hereby represents and warrants that all
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    necessary approvals for this Agreement have been obtained, and the person
    whose signature appears below has the authority necessary to execute this
    Agreement on behalf of the parties indicated.

19. Captions.  Paragraph headings herein are for convenience only and shall not
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    affect the construction or meaning of this Agreement.

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    IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first above written:

FOOTBALL NORTHWEST LLC                     MERCATA, INC.


By:  /s/ Scott S. Patrick                  By:  /s/ Tom Van Horn
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Name:  Scott S. Patrick                    Name:  Tom Van Horn
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        (printed or typed)                          (printed or typed)

Title:  VP/Corporate Sales                 Title:  President & CEO
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