On July 9, 1936 The temperature is 106 degrees in Central Park, the hottest July 9th on record in New York, as the Indians take on the Yankees at Yankee Stadium. The Yanks score four in the 1st inning, but Cleveland comes back to score 11 runs on 15 hits, including five homers, to win 11 – 4. Hal Trosky, Roy Weatherly and Joe Vosmik all homer in the 2nd frame to tie the major league record. Trosky hits another homer to tie for the American League lead with 23. Lou Gehrig and Earl Averill also homer.

Source:

Baseball Reference July 9