Ron Plaza

Ronald Charles Plaza (August 24, 1934 – April 15, 2012) was an American professional baseball player, coach and manager. Though he never made it to Major League Baseball as a player, he was a coach at the MLB level for the Seattle Pilots, Cincinnati Reds and Oakland Athletics. Later in life, he resided in St. Petersburg, Florida, and worked with the Athletics as a scout and coach for their minor league operations.

Career Born in Clifton, New Jersey, Plaza joined the Johnson City Cardinals in at just 16 years old, and batted .302 with four home runs and 34 runs batted in (RBI) in 56 games. In , with the Hamilton Cardinals, he led the Pennsylvania–Ontario–New York League with 37 doubles, was third in the league with 106 RBI and was fifth in the league in walks. He also committed a league-leading 37 errors at third base.

Plaza's first major league coaching job was the first base and hitting coach for the Seattle Pilots in . Pilots General Manager Marvin Milkes let Plaza go along with the rest of the coaching staff as the team struggled with bankruptcy and a host of other issues after completing their one and only season in Major League Baseball. His term with the Pilots earned him mention in Jim Bouton's book Ball Four, as "The Drill Instructor."

Plaza coached in the Cincinnati Reds' farm system following his stint in Seattle, and joined the big league club following the season. After succeeding Alex Grammas as Cincinnati's third base coach in , he was shifted to first base coach in June of by manager John McNamara because of Reds' baserunners being thrown out at home plate after being waved in by Plaza.