Peyton Manning had to prepare for a 2-point conversion and couldn't celebrate when he set the NFL record for touchdown passes in a season in 2004.

On Sunday, when Denver's quarterback regained the record against the Houston Texans, he was able to soak in the historic moment.

"It was very special," he said. "Very rarely during an NFL game do you get to have a moment like that."

Manning regained his record with 51 when he threw for 400 yards and four touchdowns, including three in the fourth quarter to give Denver its third straight AFC West title. He surpassed the 50 TD passes Tom Brady threw in 2007 and led the Broncos (12-3) to a 37-13 win over the Texans (2-13) that extended Houston's franchise-record skid to 13 games.

Manning did it on a 25-yard pass to Julius Thomas with 4:28 remaining. Just 2 ½ minutes earlier, he tied the mark with a 20-yard pass to Eric Decker.

Manning figures Brady will overtake him again one day, especially if the NFL moves to an 18-game regular season.