Deniers in the steroid era

The list of athletes who were accused and subsequently denied using performance-enhancing drugs is lengthy and includes some of the biggest names in their respective sports. Here is a sampling of those who claimed innocence in the face of drug allegations:

Ben Johnson

C.J. Hunter

Marion Jones

Barry Bonds

Tulowitzki's 3-run HR helps Rockies beat Miami 8-4

Colorado Rockies' Jason Giambi, right, tosses his bat after striking out in the second inning during a baseball game against the Miami Marlins in Miami, Wednesday, May 23, 2012. At left is Marlins catcher Brett Hayes. (AP Photo/Lynne Sladky)

Mark McGwire

Rafael Palmeiro

Sammy Sosa

Floyd Landis

New York Yankees v Detroit Tigers - Game Four

DETROIT, MI - OCTOBER 18: Alex Rodriguez #13 of the New York Yankees looks on during batting practice against the Detroit Tigers during game four of the American League Championship Series at Comerica Park on October 18, 2012 in Detroit, Michigan. (Photo by Leon Halip/Getty Images)

Melky Cabrera

FILE - In this Aug. 24, 2009 file photo, Lance Armstrong speaks during the opening session of the Livestrong Global Cancer Summit in Dublin, Ireland. Local and international news crews are staking out positions in front of Armstrong's lush, Spanish-style villa ahead of the cyclist's interview with Oprah Winfrey later Monday, Jan. 14, 2013. (AP Photo/Peter Morrison, File)

FILE - In this Aug. 24, 2009 file photo, Lance Armstrong speaks during the opening session of the Livestrong Global Cancer Summit in Dublin, Ireland. Local and international news crews are staking out positions in front of Armstrong's lush, Spanish-style villa ahead of the cyclist's interview with Oprah Winfrey later Monday, Jan. 14, 2013. (AP Photo/Peter Morrison, File)