At Fenway Park, the Cleveland Indians score 11 runs in the 5th inning to beat the Boston Red Sox, 19 – 0, and give Herb Score an easy win over Willard Nixon. The big blow in the inning is a grand slam by Vic Wertz. It is the worst shutout pasting ever by Boston and the most runs ever in a shutout for the Indians.

On May 18, 1955 — At Fenway Park, the Cleveland Indians score 11 runs in the 5th inning to beat the Boston Red Sox, 19 – 0, and give Herb Score an easy win over Willard Nixon. The big blow in the inning is a grand slam by Vic Wertz. It is the worst shutout pasting ever by Boston and the most runs ever in a shutout for the Indians.

Source:
Baseball Reference May 18