Mobile Site You Are Here > > > Pitching Leaders Before, During and After Age 30

Len Kasper, Cubs play-by-play announcer:I will begin with the best baseball website ever created, Baseball-Reference....

Support us without the ads? Go Ad-Free!

Age 29 <- Pitching Leaders Age 30 -> Age 31
30 Leaders Age Batting

Ages used are the player's age on June 30th.