The Philadelphia 76ers drafted Mark in the second round (31st overall) in 1997, and he played for four seasons in the NBA with the Sixers, the Nets, the Kings, and the Cavaliers, averaging 3.3 points and 2.8 rebounds per game. Of course, he was scraping by in basketball, so at that point he turned to baseball. Eight seasons in the big leagues later, he's the second-tallest pitcher to ever win 50 career games (the first is that Randy Johnson guy, who stands 6'10"). My favorite story about Hendo is as follows: last season, he pitched with the Marlins. Some of his teammates found a Michael Jordan poster that pictured His Airness dunking over none other than Mark Hendrickson. Needless to say, that poster hung in the Florida clubhouse all season long!
Picture courtesy of The Fightins
Frankly, I give Mark a lot of credit. As others have pointed out, he played at the highest professional level in baseball and basketball. MJ topped out at AA Birmingham during his short-lived try at baseball.