Boston Braves catcher Walker Cooper goes 5 for 5 in a 12 – 3 rout of the Pittsburgh Pirates. Max Surkont wins his fifth game, scattering 10 hits and giving up home runs to Ralph Kiner and Wally Westlake in the late innings.

On May 18, 1951 — Boston Braves catcher Walker Cooper goes 5 for 5 in a 12 – 3 rout of the Pittsburgh Pirates. Max Surkont wins his fifth game, scattering 10 hits and giving up home runs to Ralph Kiner and Wally Westlake in the late innings.

Source:
Baseball Reference May 18