Your timing has to be right or nothing happens. Its like when you hit the interception button too early, your guy does nothing. I like this years swat. Instead of previous years (sorry if I'm late, didn't play 13) where the guy leaps up and bats or just puts his hand out, this year guys go all out for a swat. For instance a guy was trailing a receiver and I hit L1 when the ball was thrown, he dived like 5 yards to swat the ball.
You hit L1 as it came out of the QB hands or right before it got to the receiver?