BARRY BONDS

AGE: 42
OCCUPATION: Professional baseball player
NUMBER OF TIME COVERS: 0
PREVIOUS APPEARANCES ON THE TIME 100: 0

PRO: Major league record holder for most home runs in a single season (73 in 2001) and at 735 career home runs, number one in the national league having surpassed Hank Aaron's 733 in 2006. If he hits 22 home runs this season, he'll have also broken Aaron's record for all-time career homers.

CON: Allegations of steroid use—followed by perjury charges for allegedly lying about such use—have turned Bonds into a professional baseball pariah. Even after breaking the home run record in 2006, negotiations with the Giants were slow, ending with a one-year contract signed in mid-February.