Lou Gehrig returns to 1B and goes 4 for 4, including 3 doubles, off Schoolboy Rowe, but the New York Yankees lose to the Detroit Tigers, 8 – 3.

On July 15, 1934 Lou Gehrig returns to 1B and goes 4 for 4, including 3 doubles, off Schoolboy Rowe, but the New York Yankees lose to the Detroit Tigers, 8 – 3.

Source
Baseball Reference July 15