Leroy "Satchel" Paige
Sarchel Paige was arguably the best pitcher of all time, although when he played they did not keep his stats because he was playing the negro league. He won over 2,000 games out of 2,500. He had arguably the best pitching performance of all time in a 1-0 win where he struck out 22 players including hall of famer Hack Wilson and Babe Herman.
Impact on the 20's
Although Jackie Robenson gets credit but, Satchel Paige started the destruction of the color barrier in baseball. He would have been given credit but by the time it was done he was well into his 30's and didn't want or need the pobliscity of the accomplishment.
Satchel Paige Biography