The Red Sox sweep a pair from the Yankees, with reliever Don McMahon picking up both wins. He pitches 1 2/3 inning in the opener and another two innings in game 2. The only other pitcher to win a doubleheader from the Yankees was the Browns’ Dave Davenport in 1916, who threw two complete game victories.

This Day In Baseball

On July 6, 1966, The Red Sox sweep a pair from the Yankees, with reliever Don McMahon picking up both wins. He pitches 1 2/3 inning in the opener and another two innings in game 2. The only other pitcher to win a doubleheader from the Yankees was the Browns’ Dave Davenport in 1916, who threw two complete game victories.

Source:

Baseball Reference July 6