Marvin Howard "Baby Face" Breuer (April 29, 1914 – January 17, 1991) was a pitcher in Major League Baseball.

Breuer pitched three scoreless innings, which enabled the Yankees to ultimately win the game on a passed ball by Mickey Owen.

[2] Breuer also pitched in the 1942 World Series, which the Yankees lost to the St. Louis Cardinals.

After Breuer's playing career ended, he spent 31 years working for the United States Geological Survey until his retirement in 1976.

[2] Breuer earned a Bachelor of Science degree in civil engineering from the Missouri School of Mines in 1935 and after his baseball career, worked for the United States Geological Survey until retiring in 1976.