03/18/2010 05:12 am ET Updated May 25, 2011

Mark McGwire & Steroids: PHOTOS Over The Years

Mark McGwire finally admitted that he used steroids when he broke baseball's home run record in 1998. Now that McGwire has come clean, take a look at the slugger over the years and try to determine when he started his steroid use.

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Mark Mcgwire Over The Years