Leon Day, born in Alexandria, Virginia, is noted for pitching a perfect season in 1937 (13-0) while playing for the Newark Eagles, and for his fastball. Day was also a good hitter and baserunner, batting .320 in 1937. From 1935 through 1946 he appeared in a record seven East-West All-Star Games, and set an all-star record by striking out 14 batters. On July 24, 1942 Day set an NNL record when he struck out 18 Baltimore batters in a single game – including Roy Campanella three times.

This Rawlings Big Stick bat was signed in blue by Day and includes a Great Moments COA. The signature is a bit faded, as seen in photos.