Félix Mantilla Lamela (born July 29, 1934) is a Puerto Rican former professional baseball utility player, who appeared mostly as an infielder. In his 11-year Major League Baseball (MLB) career, Mantilla played for the Milwaukee Braves (1956–61), New York Mets (1962), Boston Red Sox (1963–65), and Houston Astros (1966). He played second base the majority of his big league career (326 games), but also adeptly played shortstop (180), third base (143), outfield (156) and (in the latter part of his career), first base (16). Mantilla batted and threw right-handed. In 1953, Mantilla (along with Hank Aaron and career minor league outfielder Horace Garner) joined the Class-A Minor League Baseball (MiLB) Jacksonville Braves, of the South Atlantic League — which was (at that time) one of the first two integrated baseball teams in the Southern United States. (Mantilla and Aaron were roommates. In 1954, Aaron became the MLB Braves’ left fielder when Bobby Thomson broke his ankle. Mantilla joined the major league club two seasons later.) Both Mantilla and Aaron were vital contributors to Milwaukee winning the 1957 World Series title over the New York Yankees. Mantilla was selected by the New York Mets in the expansion draft and became their regular third baseman (95 games — 88 as a starter) in , while establishing career statistical highs in batting average, home runs, and runs batted in (RBI) (.275/11/59). During the 1962 Winter Meetings, he was traded to the Boston Red Sox for Pumpsie Green, Tracy Stallard, and Al Moran. Mantilla's numbers improved dramatically in the hitter-friendly Fenway Park: batting average of .315 in 66 games (); .289 with 30 home runs () (five fewer than he had hit in his career prior to that season); a career-high with 92 RBI (). That season, he was also named to the American League (AL) All-Star team for the only time in his career. As the starting second baseman, he went hitless in two at-bats before being replaced by Bobby Richardson. Prior to the start of the season, the Red Sox traded Mantilla to the Houston Astros for Eddie Kasko. Mantilla spent that year as a utility player before being released on November 28, 1966. The Chicago Cubs signed Mantilla as a free agent before the start of the season; however, during spring training he suffered an Achilles tendon injury that required surgery. Mantilla never played a game for them and was released