Chan Ho Park
In 2001, only three years after McGwire and Sosa finally toppled Maris's record, the mark fell again, this time to San Francisco Giants left fielder Barry Bonds. Bonds broke the record on October 5 against Chan Ho Park of the Los Angeles Dodgers and, two days later, hit his 73rd home run of the season off the Dodgers pitcher Dennis Springer. Bonds' record continues to stand today.