The Giants take advantage of three errors by Bill Mazeroski and two by Bob Bailey to tip the bumbling Bucs, 8 – 6. Maz’s last error, on a potential double play ball in the 9th, helps the Giants score three runs. Willie Mayshas three singles and three runs to lead the attack. The Giants remain 1 1/2 games back of the Phils, but learn that Juan Marichal has back spasms; he will not pitch again until August 25th.

On July 31, 1964 — The Giants take advantage of three errors by Bill Mazeroski and two by Bob Bailey to tip the bumbling Bucs, 8 – 6. Maz’s last error, on a potential double play ball in the 9th, helps the Giants score three runs. Willie Mayshas three singles and three runs to lead the attack. The Giants remain 1 1/2 games back of the Phils, but learn that Juan Marichal has back spasms; he will not pitch again until August 25th.

Source:
Baseball Reference July 29
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game