Melvin Leonard "Mike" Mazzera (b. January 31, 1914 in Stockton, CA – d. December 17, 1997 in Stockton, CA) was an American professional baseball player. In an 11-year career, Mike participated in five Major League seasons: four with the St. Louis Browns and one with the Philadelphia Phillies.

In 1933, Mazzera began his professional baseball career playing for the C-level San Antonio Missions. That year, he also played for the Baton Rouge Solons of the Dixie League, recording a combined batting average of .320 in 124 games played. He continued his minor-league career in 1934, playing for both the Palestine Pals of Palestine, Texas, and the San Antonio Missions.

In 1935, Mike participated in 154 games for the San Antonio Missions while making his Major League debut for the St. Louis Browns on September 9, 1935. For his debut, he replaced Ed Coleman as a pinch runner.

Mike spent the entire 1936 season and the majority of the 1937 season with the San Antonio Missions, recording 96 hits, 13 doubles, and four home runs for the Missions in 1936 while recording 134 hits and nine home runs for them in 1937.

Mazzera's 1938 season was spent with the MLB St. Louis Browns. In 86 games played, he batted for a .279 average with six home runs and twenty-five strikeouts, helping the Browns to finish seventh in the American League with a 55-97 record.

Mike played in 33 games for the Browns, but also played for the Philadelphia Phillies double-A affiliate, the Toronto Maple Leafs, later that season. He made his Phillies debut in 1940, playing in 69 games for the Phillies. In his only season as a Phillie, Mazzera recorded a .237 batting average with fifteen strikeouts, nineteen walks, and thirteen runs batted in.

In 1940, Mike was signed by the San Diego Padres of the Pacific Coast League. He played for the Padres in the 1941, 1942, and 1944 seasons. In 1942, Mike led the Padres in home runs, runs batted in, doubles, and triples, leading to the observance of a "Mel Mazzera Day" on August 30, 1942.

Mazzera died on December 17, 1997, in Stockton, California, and was buried in San Joaquin Cemetery in Stockton.

(excerpted from FindAGrave.com, Baseball Almanac, BR Bullpen & Wikipedia)