Mark McGwire

Oakland Athletics slugger Mark McGwire hits the Athletics 9,000th team home run, May 29, 1996. Mark McGwire and Geronimo Berroa each homered as the Oakland Athletics defeated the Boston Red Sox 6-2. McGwire has finally come clean, admitting he used steroids when he broke baseball's home run record in 1998.

St. Louis Cardinals manager Tony La Russa, left, gives first baseman Mark McGwire a hug after the Cardinals defeated the Chicago Cubs 2-1 in St. Louis, Mo., September 28, 1997.

St. Louis Cardinals' Mark McGwire hits his 61st home run of the season in the first inning off Chicago Cubs pitcher Mike Morgan, Monday, Sept. 7, 1998, in St. Louis. The home run ties Roger Maris' major league record of 61 in 1961.

St. Louis Cardinals fans celebrate after slugger Mark McGwire hit his first inning solo home run against the Chicago Cubs starting pitcher Mike Margan Monday, Sept. 7, 1998. McGwire's 61st home tied the 1961 home run record set by Roger Maris. Fans at Busch Stadium gave McGwire a standing ovation following the history making home run.

St. Louis Cardinals' Mark McGwire lifts his son Matt at home plate after hitting his record-setting 62nd single-season home run, off Chicago Cubs pitcher Steve Trachsel in a baseball game in St. Louis, Mo, Sept. 8, 1998.

St. Louis Cardinals' Mark McGwire hugs Richard Maris, son of the late baseball great Roger Maris, after hitting his record-breaking 62nd home run of the season, off Chicago Cubs pitcher Steve Trachsel in St. Louis, Mo., Sept. 8, 1998. McGwire broke Maris's long-time single-season home run record. At left is Roger Maris Jr.

St. Louis Cardinals slugger Mark McGwire smiles as he rounds the bases after hitting his 70th home run of the season in the seventh inning against the Montreal Expos, at Busch Stadium in St. Louis, Sept. 27, 1998.

St. Louis Cardinals' Mark McGwire acknowledges the crowd at Busch Stadium, Sept. 27, 1998, during a post-game ceremony at which he received The St. Louis Award from the City of St. Louis, after hitting two home runs during the Cardinals' final game, to set a new major league single-season home run record with 70 home runs.

Mark McGwire's uniform, bat and other equipment worn during the 1998 season are on display at the Baseball Hall of Fame in Cooperstown, N.Y. on July 6, 1999. Many credited the Sammy Sosa-McGwire home run chase in 1998 with "saving baseball," by both bringing in new, younger fans and bringing back old fans soured by the 1994 Major League Baseball strike.

St. Louis Cardinals slugger Mark McGwire watches the flight of his 65th home run of the season in the first inning against the Chicago Cubs Sunday, Oct. 3, 1999, at Busch Stadium in St. Louis.

Cal Ripken, left, throws out the first pitch as, from left to right, Pete Rose, Hank Aaron, Mark McGwire and Kirk Gibson watch, before the start of game 4 of the World Series in San Francisco, Wednesday, Oct. 23, 2002.

Baseball isn't his only game. Mark McGwire hits out of a bunker Wednesday, July 28, 2004, during the Western Open at Point O' Woods in Benton Harbor, Mich.

Former St. Louis Cardinals first baseman Mark McGwire, March 17, 2005, at U.S. House Government Reform Committee hearing entitled "Restoring Faith in America's Pastime: Evaluating Major League Baseball's Effort to Eradicate Steroid Use."

St. Louis Cardinals slugger Mark McGwire tips his helmet to the standing-crowd after hitting his 69th home run of the season, off Montreal Expos pitcher Mike Thurman, at Busch Stadium, in St. Louis, Sunday, Sept. 27, 1998.

San Francisco Giants' Barry Bonds, left, leads off first base in front of St. Louis Cardinals first baseman Mark McGwire in the first inning of a baseball game in St. Louis, June 21, 2001.

In this image from video, Mark McGwire pauses during an interview with Bob Costas on MLB Network on Monday, Jan. 11, 2010. McGwire admitted earlier Monday he used steroids when he broke baseball's home run record in 1998. McGwire said in a statement sent to The Associated Press that he used steroids on and off for nearly a decade.

St. Louis Cardinals batting coach Mark McGwire waits to take the field with the rest of the team for a ceremony before the Cardinals' baseball home opener against the Houston Astros at Busch Stadium on Monday, April 12, 2010, in St. Louis.

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