Arnoldi Anthony Cruz is an American former professional baseball catcher. He was drafted by the St. Louis Cardinals in the 26th round of the 2007 MLB Draft and he made his Major League Baseball (MLB) debut with them four years later. Cruz was a member of the Cardinals 2011 World Series champion team. He also played for the Kansas City Royals and Cincinnati Reds.

Catcher is a position in baseball and softball. When a batter takes their turn to hit, the catcher crouches behind home plate, in front of the (home) umpire, and receives the ball from the pitcher. In addition to this primary duty, the catcher is also called upon to master many other skills in order to field the position well. The role of the catcher is similar to that of the wicket-keeper in cricket.