The New York Giants’ Ethan Allen pinch-hits a grand slam off the Cubs’ Pat Malone to tie the game, but Chicago scores again to win at the Polo Grounds, 11 – 10. Sparky Adams also homers in the game, his first since 1925. He had been to bat 3,104 times without a round-tripper.

This Day In Baseball

On June 30, 1931 The New York Giants’ Ethan Allen pinch-hits a grand slam off the Cubs’ Pat Malone to tie the game, but Chicago scores again to win at the Polo Grounds, 11 – 10. Sparky Adams also homers in the game, his first since 1925. He had been to bat 3,104 times without a round-tripper.

Source
Baseball Reference June 30