Spring training starts Tuesday as pitchers and catchers return to the field just 102 days after the World Series.

Just over half the ball/strike challenges were successful on the first day of spring training games as Major League Baseball prepared for the first regular-season use of the automated ball-strike system — the so-called robot umpires.

MLB teams are all set to open their spring training camps in Florida and Arizona. See when each team is scheduled to begin workouts.