New York beats Kansas City, 12 – 5, with Mickey Mantle walloping a 1st-inning homer off Art Ditmar. Mantle and Roger Maris are both at 40 homers.

This Day In Baseball

On August 2, 1961 — New York beats Kansas City, 12 – 5, with Mickey Mantle walloping a 1st-inning homer off Art Ditmar. Mantle and Roger Maris are both at 40 homers.

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