The Patriots stunned the Ravens in more ways than one Saturday night at Gillette Stadium to advance to the AFC Championship game, overcoming two separate 14-point deficits thanks to an explosive trick play and a number of deceiving formations.

Down 28-14 in the third quarter, the Patriots ran a series of plays with four offensive lineman and one skill player as an ineligible receiver, leaving the Ravens to guess which receivers were actually eligible with no time to make a defensive substitution. Using the strategy, the Patriots drove into Ravens territory until coach Baltimore coach John Harbaugh stepped on the field to argue with officials, drawing an unsportsmanlike conduct penalty. Two plays later, Tom Brady threw a 5-yard touchdown pass to Rob Gronkowski.

Harbaugh said he’s never seen a team do that before, but expects the league to take action.

Via the AP:

“Nobody’s ever seen that before…. It’s not something anybody’s ever done before. The league will look at that type of thing and I’m sure that they’ll make some adjustments.”

Brady, meanwhile, said that the Ravens should study the rule book.

“Maybe those guys gotta study the rule book and figure it out. We obviously knew what we were doing and we made some pretty important plays. It was a real good weapon for us. Maybe we’ll have something in store next week.”

On the Patriots’ next drive, wide receiver Julian Edelman threw a 51-yard touchdown pass to tie the game, and New England would go on to win 35-31.