At Crosley Field‚ following a single by Lee Handley‚ and two pinch-hitters reaching base‚ Sammy Byrd hits a pinch ultimate grand slam in the bottom of the 9th to give the Reds a 4 – 3 win over Pittsburgh. Bucs starter Bill Swift loads the bases and reliever Cy Blanton serves up just one pitch to Byrd who lets it fly. Byrd will hit one more homer this year and then retire next March 10th to play professional golf. The three pinch-hitters scoring ties the National League record.

On May 23, 1936 — At Crosley Field‚ following a single by Lee Handley‚ and two pinch-hitters reaching base‚ Sammy Byrd hits a pinch ultimate grand slam in the bottom of the 9th to give the Reds a 4 – 3 win over Pittsburgh. Bucs starter Bill Swift loads the bases and reliever Cy Blanton serves up just one pitch to Byrd who lets it fly. Byrd will hit one more homer this year and then retire next March 10th to play professional golf. The three pinch-hitters scoring ties the National League record.

Source:
Baseball Reference May 23