Denver Broncos head coach Sean Payton admitted he allowed a major blunder to happen at the end of Sunday's game against the Indianapolis Colts .

A leverage penalty on Broncos linebacker Dondrea Tillman allowed the Colts a second chance to make a successful field goal to claim a 29-28 victory over the Broncos in Week 2.

On Monday, Payton explained that the Broncos used a situational field-goal blocking play that wasn't needed, given Colts kicker Spencer Shrader needed to make a distance of 60 yards to nail the game-winner.

"We had a certain field goal block [in the game plan] in the event of a game-ending field goal,'' Payton said via Jeff Legwold of ESPN . "But that's on me in that situation. It's not on [special teams coach] Darren [Rizzi], it's not on Tillman.

"A 60-yard fi

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