Mark McGwire

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AP Photo/James A. Finley

Mark McGwire, 1B


Career: 1986-2001, Athletics, Cardinals
Fun fact: Hit a 538-foot home run off Randy Johnson in 1997

Eleven years after setting the single-season home run record (49) for rookies, Big Mac shattered Roger Maris' single-season home run record of 61 in 1998, finishing the history-making season with 70.

From 1996 to 1999, Big Mac slugged 245 of his 583 career home runs. He averaged a home run every 10.61 at-bats in his career -- better than both Barry Bonds and Babe Ruth.

Previous rank: 83