Bonds set the MLB single-season home run record in 2001, breaking Mark McGwire's record of 70 set in 1998. Bonds was later investigated for PEDs in BALCO investigation.
Barry Bonds Home Runs By Year Graphic. Bonds set the MLB single-season home run record in 2001, breaking Mark McGwire's record of 70 set in 1998. Bonds was later investigated for PEDs in BALCO investigation.