Ralph Joseph "Putsy" Caballero (November 5, 1927 – December 8, 2016) was an American professional baseball infielder who played in Major League Baseball (MLB) in parts of eight seasons, all for the Philadelphia Phillies, during the Whiz Kids era. He holds the record as the youngest person in MLB history to appear at third base.After graduating from Jesuit High School in New Orleans at age 16, the Phillies signed Caballero to a contract worth $10,000. Following a few short stints at the major league level and playing parts of three seasons in the minor leagues, Caballero was named the Phillies starter at third base in 1948. In his only season as an everyday player, Caballero batted .245 in 380 plate appearances at age 20.After another stint in the minors in 1949, he was a backup infielder,