Mark Allan Hendrickson is an American baseball pitcher for the York Revolution of the Atlantic League of Professional Baseball. Hendrickson is also a former professional basketball player who played as power forward in the National Basketball Association and Continental Basketball Association for four years before becoming a full-time baseball player. He is one of just 12 athletes to play in both MLB and the NBA. Hendrickson is notable for his size, at 6' 9". The only players in Major League Baseball as of 2010 who are taller than Hendrickson are Jon Rauch, at 6'11", and Chris Young, at 6'10". Hendrickson is a groundball pitcher, with a fastball in the high 80s and a decent 12?6 curveball. Hendrickson also has a 10?4 slider, but his slider only reaches the high 70s to low 80s. Thus, when Hendrickson has success, it is due to control, movement, and location and not power. 

June 23rd, 1974 in Mount Vernon (Age 50)