Jon Rauch
Jon Erich Rauch (born September 27, 1978) is an American former professional baseball pitcher. At , he is the tallest player in Major League Baseball history. He is also an Olympic Gold Medalist.
NBA G League
The tallest player ever to be assigned was Hasheem Thabeet at 7'3", the second player selected in the 2009 NBA draft. The tallest player to ever play in the G League was England's Paul Sturgess at 7'8", who played with the Texas Legends during the 2013–14 season.