HOW IT WILL WORK
Managers will have at least one challenge to use every game. If his challenge is upheld, the manager will retain the ability to challenge one more play during the game. No manager may challenge more than two plays in a game. Challenges must be made in a “timely” matter without unnecessary delay. Once the manager has exhausted his challenges, from the seventh inning on the umpire crew chief may invoke instant replay on any reviewable call. Home run and other boundary calls will remain reviewable under the procedures previously in place.
To review plays, a designated communication location will be established in every ballpark. The crew chief and at least one other umpire will have access to a hard-wired headset connected to the replay command center in New York, which will be staffed by MLB umpires. After viewing video feeds, a replay official will make the ultimate determination to uphold or overturn the call, based on the standard of clear and convincing evidence.
To determine whether to challenge a play, personnel in the dugout will be permitted to communicate with a video specialist in the clubhouse who has access to the same video available to replay officials. This communication will occur via dugout phone.
Both home and visiting clubs will have standardized technology to ensure equal access to all video. No monitors or additional electronic equipment will be permitted in the dugout.
Reviewable plays: home runs, ground-rule doubles, fan interference, stadium boundary calls, force plays, tag plays, fair/foul (outfield only), trap plays in the outfield, hit by pitch and timing plays (example: whether a runner scores before a third out).
Plays that are not reviewable: Ball/strike calls, the “neighborhood play” at second base (an infielder not always making contact with the base while attempting to complete a double play), judgment calls such as batter’s interference or obstruction on the base paths, all other plays not listed above.