Phils P Art Mahaffey gives up two home runs to Frank Thomas and two more to Marv Throneberry, but negates those with a grand slam of his own in the 3rd inning. Mahaffey tops the Mets, 9 – 4 at New York.

On August 2, 1962 — Phils P Art Mahaffey gives up two home runs to Frank Thomas and two more to Marv Throneberry, but negates those with a grand slam of his own in the 3rd inning. Mahaffey tops the Mets, 9 – 4 at New York.

Source:
Baseball Reference August 2
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game