People believed that instant replay would slow down games and that was reason enough to keep the status-quo—meaning no replay. Does replay slow down NFL games?

To avoid the Zapruder effect with instant replay, producers have to be judicious, but sometimes their hands are forced.

If baseball currently had instant replay in effect, Jim Joyce would have been taken off the hook. Instead, every blown call will forever be referred to as a Jim Joyce.

An experimental rule will allow Big Ten, Mid-American conferences to use instant replay on certain plays during the 2016-17 season.

The replay takes about 30 seconds to put together, so it’s not quite “instant replay.” And this season, the replays were limited to plays in the red zone.

Instant replay as a whole has an up-and-down history. When the league first implemented the reviews in 1986, the technology was limited, and its uses were even more limited.

The NBA approved five modifications to the league's instant replay system and changes to three existing rules. The new rules will take effect starting with Friday’s preseason games.

Major League Baseball teams unanimously approved the expansion of instant replay Thursday, and the changes will be in effect for the 2014 regular season and postseason. Managers will start each ...