When a batter walks up during an MLB game this season, don't expect their walk-up music to make it to the chorus.

In an attempt to speed up games, Major League Baseball quietly changed the rules about music that batters can use when they come to the plate, limiting it to just 15 seconds.

That really ticks off Boston Red Sox outfielder Shane Victorino, whose use of Bob Marley's "Three Little Birds" became a rallying cry for fans at Fenway Park last season. Now the second line of the song, "Cause every little thing's/gonna be alright" won't get played because of the rule. (NBC Sports)