MLB approves expansion of instant replay
Major League managers could get two chances to challenge any disputed calls. (AP Photo/Michael Dwyer)
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 game with one challenge. If correct on the first challenge, they would receive a second. Additionally, umpire crew chiefs can invoke replay starting in the seventh inning if challenges run out.