Major League Baseball first base coaches

Edwin Lee Mathews (October 13, 1931 – February 18, 2001) was an American professional baseball third baseman. He played in Major League Baseball (MLB) for 17 seasons for the Boston / Milwaukee / Atlanta Braves (1952–1966); Houston Astros (1967) and Detroit Tigers (1967–68). Inducted into the National Baseball Hall of Fame in 1978, he is the only player to have represented the Braves in the three cities they have called home. He played 1,944 games for the Braves during their 13-season tenure in Milwaukee—the prime of Mathews' career.
Mathews is regarded as one of the best third basemen ever to play the game. He was an All-Star for nine seasons. He won the National League (NL) home run title in 1953 and 1959 and was the NL Most Valuable Player runner-up both of those seasons. He hit 512 home runs during his major league career. Mathews coached for the Atlanta Braves in 1971, and he was the team's manager from 1972 to 1974. Later, he was a scout and coach for the Texas Rangers, Milwaukee Brewers, and Oakland Athletics.

Donald George Leppert (October 19, 1931 – April 13, 2023) was an American professional baseball player and coach.
A catcher, Leppert appeared in Major League Baseball (MLB) from 1961 to 1964 for the Pittsburgh Pirates and Washington Senators. Leppert threw and batted right-handed; he stood 6 feet 2 inches (1.88 m) tall and weighed 220 pounds (100 kg). He was born in Indianapolis and began his 12-year active career in 1955 in the Milwaukee Braves' organization.

Robert Frank Knoop ( kuh-NOP; born October 18, 1938) is an American former Major League Baseball second baseman and coach. In his nine-year MLB career, he appeared in 1,153 games as a member of the Los Angeles / California Angels (1964–69), Chicago White Sox (1969–70) and Kansas City Royals (1971–72). He threw and batted right-handed, stood 6 feet 1 inch (1.85 m) tall and weighed 170 pounds (77 kg).

Raymond Frederick Katt (May 9, 1927 – October 19, 1999) was an American professional baseball player and coach. He played as a catcher in Major League Baseball during the 1950s, and later became the longtime and highly successful head baseball coach of Texas Lutheran University. A lifelong resident of New Braunfels, Texas, Katt stood 6 ft 2 in (1.88 m) (183 cm) tall, weighed 200 pounds (91 kg), and threw and batted right-handed in his playing days. He attended Texas A&M University.

Joseph Rudolph Nossek (born November 8, 1940) is an American former Major League Baseball outfielder, coach and scout. He threw and batted right-handed, and stood 6' (183 cm) tall and weighed 178 pounds (81 kg) as an active player.

Gary Thomas DiSarcina (born November 19, 1967) is an American former professional baseball shortstop and coach. He played his entire Major League Baseball (MLB) career for the California / Anaheim Angels.

James Elmer Gantner (born January 5, 1953) is a former Major League Baseball player who spent his entire career with the Milwaukee Brewers (1976–92).