Exhibit 4.1

        

       

        

      SPECIMEN UNIT CERTIFICATE

      NUMBER UNITS

      U-

      SEE REVERSE FOR CERTAIN

      DEFINITIONS

      CUSIP [ ]

      BULLPEN PARLAY ACQUISITION COMPANY

      UNITS CONSISTING OF ONE CLASS A ORDINARY SHARE AND ONE-HALF OF ONE

       REDEEMABLE WARRANT TO PURCHASE ONE CLASS A ORDINARY SHARE

       

        

      THIS CERTIFIES THAT                 is the owner of                 Units.

      Each Unit (“Unit”) consists of one (1) Class A ordinary share, par value $0.0001 per share (“Ordinary Shares”), of Bullpen Parlay Acquisition Company, a Cayman Islands
        exempted company (the “Company”), and one-half (1/2) of one redeemable warrant (each whole warrant, a “Warrant”). Each Warrant entitles the holder to purchase one (1) Ordinary Share for $11.50 per share (subject to adjustment). Each Warrant will
        become exercisable on the later of (i) thirty (30) days after the Company’s completion of a merger, share exchange, asset acquisition, share purchase, reorganization or other similar business combination with one or more businesses (each, a
        “Business Combination”), and (ii) twelve (12) months from the closing of the Company’s initial public offering, and will expire unless exercised before 5:00 p.m., New York City Time, on the date that is five (5) years after the date on which the
        Company completes its initial Business Combination, or earlier upon redemption or liquidation (the “Expiration Date”). The Ordinary Shares and Warrants comprising the Units represented by this certificate are not transferable separately prior to
        ____________, 2021, unless Citigroup Global Markets Inc. elects to allow earlier separate trading, subject to the Company’s filing with the Securities and Exchange Commission of a Current Report on Form 8-K containing an audited balance sheet
        reflecting the Company’s receipt of the gross proceeds of the initial public offering and issuing a press release announcing when separate trading will begin. No fractional warrants will be issued upon separation of the Units and only whole
        warrants are exercisable. The terms of the Warrants are governed by a Warrant Agreement, dated as of ____________, 2021, between the Company and American Stock Transfer & Trust Company, LLC, as Warrant Agent, and are subject to the terms and
        provisions contained therein, all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement are on file at the office of the Warrant Agent at 48 Wall Street, 22nd Floor, New York,
        New York 10005, and are available to any Warrant holder on written request and without cost.

      Upon the consummation of the Business Combination, the Units represented by this certificate will automatically separate into the Class A Ordinary Shares and Warrants
        comprising such Units.

      This certificate is not valid unless countersigned by the Transfer Agent and Registrar of the Company.

      This certificate shall be governed by and construed in accordance with the internal laws of the State of New York.

      Witness the facsimile signatures of its duly authorized officers.

       

         

      
        	
                By:

              	 	 	 	 
	 	
                Chief Executive Officer

              	 	
                [President]

              	 


      

       

         

      
        
          


      

      BULLPEN PARLAY ACQUISITION COMPANY

       

        

      The Company will furnish without charge to each unitholder who so requests, a statement of the powers, designations, preferences and relative, participating, optional or
        other special rights of each class of shares or series thereof of the Company and the qualifications, limitations or restrictions of such preferences and/or rights.

       

        

      The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable
        laws or regulations:

       

        

      	
              TEN COM

            	
              —

            	
              as tenants in common

            	 	
              UNIF GIFT MIN ACT

            	
              —

            	 	
              Custodian

            	 
	 	 	 	 	 	 	
              (Cust)

            	 	
              (Minor)

            
	 	 	 	 	 	 	 
	
              TEN ENT

            	
              —

            	
              as tenants by the entireties

            	 	 	 	
              under Uniform Gifts to Minors Act

            
	 	 	 	 	 	 	 
	 	 	 	 	 	 	
              (State)

            
	 	 	 	 	 	 	 
	
              JT TEN

            	
              —

            	
              as joint tenants with right of

              survivorship and not as tenants in

              common

            	 	 	 	 


       

         

      
        	
                Additional abbreviations may also be used though not in the above list.

              
	 
	
                For value received, ___________________________ hereby sells, assigns and transfers unto

              
	 
	
                PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE

              
	 
	
                (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

              
	 
	
                ____________________ Units represented by the within Certificate, and hereby irrevocably constitutes and appoints Attorney to transfer said Units on the books of the within named Company
                  with full power of substitution in the premises.

              


      

       

        

      
        	
                Dated

              	 	 	 
	 	 	 	
                

                

                Notice:         

              	
                Shareholder

                 

                  

                The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

              


      

       

         

      
        	
                Signature(s) Guaranteed:

              	 
	
                THE SIGNATURE(S) MUST BE GUARANTEED BY

                AN ELIGIBLE GUARANTOR INSTITUTION

                (BANKS, STOCKBROKERS, SAVINGS AND LOAN

                ASSOCIATIONS AND CREDIT UNIONS WITH

                MEMBERSHIP IN AN APPROVED SIGNATURE

                GUARANTEE MEDALLION PROGRAM, PURSUANT

                TO S.E.C. RULE 17Ad-15 OR ANY SUCCESSOR

                RULES).

              	 


      

      

         

      In each case, as more fully described in the Company’s final prospectus dated  ____________, 2021, the holder(s) of this certificate shall be entitled to receive a pro-rata
        portion of certain funds held in the trust account established in connection with the Company’s initial public offering only in the event that (i) the Company redeems the Ordinary Shares sold in its initial public offering and liquidates because it
        does not consummate an initial business combination within the period of time set forth in the Company’s amended and restated memorandum and articles of association, as the same may be amended from time to time, (ii) the Company redeems the
        Ordinary Shares sold in its initial public offering in connection with a shareholder vote to amend the Company’s amended and restated memorandum and articles of association that would affect the substance or timing of the Company’s obligation to
        provide for the redemption of Class A ordinary shares in connection with an initial business combination or to redeem 100% of the Ordinary Shares if it does not consummate an initial business combination within the time period set forth therein, or
        (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective Ordinary Shares in connection with a tender offer (or proxy solicitation, solely in the event the Company seeks shareholder approval of the proposed initial business
        combination) setting forth the details of a proposed initial business combination. In no other circumstances shall the holder(s) have any right or interest of any kind in or to the trust account.