Sammy Sosa (21) crosses home plate after hitting his 536th career home run off Cincinnati Reds pitcher Josh Hall in the third inning in Cincinnati, Sept. 24, 2003.
Credit: AP Photo/David Kohl
The Chicago Cubs' Sammy Sosa watches from the dugout during the eighth inning against the Arizona Diamondbacks at Bank One Ballpark in Phoenix, Aug. 24, 2003.
Credit: AP Photo/Matt York
Sammy Sosa smiles during batting practice prior to a baseball game with the Cincinnati Reds in Cincinnati, June 18, 2003.
Credit: AP Photo/Al Behrman
Fans make their feelings known as Chicago's Sammy Sosa bats in the eighth inning of a baseball game against the Baltimore Orioles at Camden Yards in Baltimore, June 10, 2003.
Credit: AP Photo/Roberto Borea
The Chicago Cubs' Sammy Sosa, left, and San Francisco Giants' Barry Bonds smile during batting practice prior to a baseball game in San Francisco, April 29, 2003.
Sammy Sosa, with the Texas Rangers, connects for his 600th career home run against Chicago Cubs pitcher Jason Marquis in the fifth inning in Arlington, Texas, Wednesday, June 20, 2007.
Credit: AP Photo/Tony Gutierrez
Sammy Sosa connects for a solo home run off Colorado Rockies starting pitcher Byung-Hyun Kim in the fourth inning Saturday, June 18, 2005, for the Baltimore Orioles. Sosa hit his 583rd home run to pull even with Mark McGwire for sixth place on the career list as the Orioles won 7-2.
Sammy Sosa, Rafael Palmiero, Mark McGwire and Curt Schilling (l-r), at a U.S. House Government Reform Committee hearing entitled "Restoring Faith in America's Pastime: Evaluating Major League Baseball's Effort to Eradicate Steroid Use."
Sammy Sosa tries on Baltimore Orioles jersey and hat, Maryland, Feb. 2, 2005.
Sammy Sosa hits wall while chasing a ball in Chicago, Sept. 27, 2002.