Getty Matt Carpenter at Angel Stadium. Veteran infielder and three-time All-Star Matt Carpenter has officially announced his retirement from Major League Basebal l. This concludes a 14-season career that left a lasting impact on the St. Louis Cardinals and the sport at large. Carpenter made the announcement on May 14 during an appearance on the “Get in the Game” podcast hosted by former MLB pitcher Scott Linebrink. St. Louis Cardinals @Cardinals · Follow After 14 seasons in the Major Leagues,