Question: In early September 2009, Robert Flores was replaced by which American sportscaster who has been an anchor for ESPN since 1996?

Context paragraphs:
Randy Scott (sportscaster): Randy Scott is an American sportscaster who currently works for ESPN.  He previously served as a sports anchor for WNUR sports radio. .  He began his career with a job of anchor and reporter in KSWO-TV in Oklahoma but soon moved to WNEG-TV which kick-started his career in sports journalism as he became a sports director there.  After working on the position for a while, he joined WINK-TV.  He then again served as the anchor and reporter for the NESN in Boston before finally landing the job in ESPN in June 2012.

Robert Flores: Robert Flores (born July 7, 1970) is a sports journalist, who works for MLB Network and NHL Network as a studio host for each.  Flores formerly worked at ESPN.  Joining the network in 2005, Flores was an anchor for ESPNEWS and for ESPN's "SportsCenter" (2007–2016).  Flores provided studio updates during each game of ABC College Football, and Saturday Night Football.  He also served as a substitute studio host for ESPN2's "Friday Night Fights".  Flores hosted the live afternoon edition of "SportsCenter" from noon - 3 p.m. with Chris McKendry until early September 2009, when he was replaced with John Buccigross.  He was also a substitute host for Baseball Tonight.  Flores announced on February 4, 2016 that he would be leaving ESPN after ten years.

Steve Weissman: Steve Weissman is an American sportscaster who joined ESPN in January 2010.  He came to ESPN from Comcast Sportsnet in California, where he served as the network's lead anchor.  Prior to CSN, he worked at WNEM in Saginaw, Michigan, winning multiple Michigan Association of Broadcasters Awards.

John Buccigross: John Buccigross ( ) is an American sportscaster.  He has been an anchor for ESPN since 1996.

Randy Karraker: Randall James Karraker (born August 19, 1962) is an American sportscaster in St. Louis, Missouri.  He hosts "The Fast Lane", the top-rated sports radio show in St. Louis, on 101 ESPN, with former St. Louis Cardinals player Brad Thompson and Chris Rongey.  He was also the host of the St. Louis Rams pregame shows on 101 ESPN up until the team's move to Los Angeles in January 2016.  He hosted this show with former NFL coach Jim Hanifan, before Hanifan was replaced by Rick Venturi in 2009, and then with Anthony Stalter up until the team's departure.  In 2009 and 2010, he was also the television voice of Southern Illinois Edwardsville Cougars basketball on CCIN.  He used to be the host of the popular CCIN television program "Chalk Talk", with Malcolm Briggs, McGraw Millhaven, and Tony Twist.

Chris Berman: Christopher James Berman (born May 10, 1955), nicknamed Boomer, is an American sportscaster.  He has been an anchor for "SportsCenter" on ESPN since 1979, joining a month after its initial launch, and hosted the network's "Sunday NFL Countdown" program from 1985 to 2016.  He has also anchored "Monday Night Countdown", U.S. Open golf, the Stanley Cup Finals, and other programming on ESPN and ABC Sports.  Berman calls play-by-play of select Major League Baseball games for ESPN, which included the Home Run Derby until 2016.  A six-time honoree of the National Sports Media Association's "National Sportscaster of the Year" award, Berman was instrumental in establishing ESPN's lasting popularity during the network's formative years.  He is well known for his various catchphrases and quirky demeanor.  In January 2017, it was announced that Berman would be stepping down from several NFL-related roles at ESPN, but would be remaining at the company.

George Bodenheimer: George Bodenheimer (born May 6, 1958) is the former president of ESPN Inc. and of ABC's sports division, known since 2006 as ESPN on ABC.  He was president of ESPN since November 19, 1998 and of the former ABC Sports since March 3, 2003.  As president of ESPN, he launched: ESPNHD, ESPN2HD, ESPN Plus, ESPN PPV, ESPN3, ESPN Motion, ESPNU, ESPN Deportes.  As of October, 2011 Bodenheimer was replaced by John Skipper.

Joe Buck: Joseph Francis "Joe" Buck (born April 25, 1969) is an American sportscaster and the son of sportscaster Jack Buck.  He has won numerous Sports Emmy Awards for his work with Fox Sports, including his roles as lead play-by-play announcer for the network's National Football League and Major League Baseball coverage, and is a three-time recipient of the National Sportscaster of the Year award.  Since 1996, he has served as the play-by-play announcer for the World Series, each year, with the exceptions of 1997 and 1999.

Sara Walsh: Sara Elizabeth Walsh (born April 12, 1978) is an American sportscaster who joined ESPN in May 2010.  Walsh came to ESPN from WUSA-TV in Washington, D.C., where she served as the station’s weekend sports anchor and Redskins beat reporter from 2006 to 2010.  Prior to WUSA, Walsh worked at WKRN in Nashville from 2003 to 2006, winning four regional Emmys in three years.  She co-hosted the weekly “Monday Night Live” with Titans Coach Jeff Fisher, and hosted a weekly radio show with then Titans defensive tackle Albert Haynesworth.  Walsh also served as Sports Director at WPGA in Macon, Georgia from 2001 to 2003, and began her career as a sports writer for the "Beaches Leader" newspaper in Jacksonville Beach.  She was most recently an anchor on ESPN's "SportsCenter" until May 4, 2017, when she was let go by the network.

Samantha Ponder: Samantha Sainte-Claire Ponder (née Steele) (born December 11, 1985) is an American sportscaster from Phoenix, Arizona who is currently the host of Sunday NFL Countdown on ESPN.  Prior to hosting Sunday NFL Countdown, Ponder worked as a reporter/host for ESPN college football and as a basketball sideline reporter.  Ponder replaced Erin Andrews on "College GameDay" Saturdays at 10 AM ET on ESPN, as well as co-host of the Saturday 9 AM ET edition on ESPNU.  In addition to her duties on College Gameday, Ponder had been the regular sideline reporter for ESPN's Thursday Night College Football with Rece Davis, Jesse Palmer, and David Pollack from August 2012 until 2014.  Ponder also appeared on the ESPN-owned Texas-oriented regional network Longhorn Network.

Supporting paragraphs: Robert Flores John Buccigross
Answer: John Buccigross