Monte Pfeffer debuted on September 29, 1913, playing for the Philadelphia Athletics at Shibe Park; he played his final game on September 29, 1913, playing for the Philadelphia Athletics at Shibe Park.
Monte Beville debuted on April 24, 1903 and played his final game on October 8, 1904.
Monte Cross debuted on September 27, 1892 and played his final game on October 4, 1907.
Jeff Pfeffer debuted on April 16, 1911, playing for the St. Louis Browns at Sportsman's Park IV; he played his final game on September 26, 1924, playing for the Pittsburgh Pirates at Forbes Field.
Fred Pfeffer debuted on May 1, 1882, playing for the Troy Trojans at Troy Ball Club Grounds; he played his final game on June 14, 1897, playing for the Chicago Colts at West Side Park II.
Big Jeff Pfeffer debuted on April 15, 1905, playing for the Chicago Cubs at West Side Park II; he played his final game on October 9, 1911, playing for the Boston Rustlers at South End Grounds III.
Monte Cross debuted on September 27, 1892, playing for the Baltimore Orioles at Union Park; he played his final game on October 4, 1907, playing for the Philadelphia Athletics at Columbia Park.
Monte Beville debuted on April 24, 1903, playing for the New York Highlanders at Hilltop Park; he played his final game on October 8, 1904, playing for the Detroit Tigers at Bennett Park.
Monte Irvin debuted on July 8, 1949, playing for the New York Giants at Polo Grounds IV; he played his final game on September 30, 1956, playing for the Chicago Cubs at Wrigley Field.
Monte Weaver debuted on September 20, 1931, playing for the Washington Senators at Griffith Stadium I; he played his final game on July 4, 1939, playing for the Boston Red Sox at Fenway Park II.
Monte Pearson debuted on April 22, 1932, playing for the Cleveland Indians at League Park II/Cleveland Stadium; he played his final game on August 5, 1941, playing for the Cincinnati Reds at Crosley Field.
Monte Ward debuted on July 15, 1878, playing for the Providence Grays at Messer Street Grounds; he played his final game on September 29, 1894, playing for the New York Giants at Polo Grounds III.
Jeff Pfeffer played in 6 games at pitcher for the Brooklyn Robins in 1921, starting in none of them. He made 2 putouts, had 9 assists, and committed no errors, equivalent to 0 errors per game (estimate based on total games played in). He had one double play.