—Each manager will have a maximum two challenges per game.
—If a challenge is upheld, it won't count against a manager's limit.
—If a manager wants to challenge a call, he notifies an umpire before the next pitch.
—A manager cannot call for a challenge after he argues a play.
—Video will be reviewed in New York, likely by current or former major league umpires.
—If a manager is out of challenges, an umpire probably will be allowed to call for a review if he wants to.
—Ball/strike calls, checked swings and some foul tip calls may not be reviewed.