DENVER (AP) — Peyton Manning threw three touchdowns, including one to defensive tackle Mitch Unrein, to help the Denver Broncos wrap up the AFC West with a 31-23 victory Sunday over the Tampa Bay Buccaneers.

The Broncos (9-3) won their seventh straight and the Tampa Bay (6-6) loss clinched the NFC South for Atlanta, which won on Thursday.

Manning threw for 242 yards. He now has 29 touchdown passes on the season, moving past Jake Plummer and John Elway for the most by a Denver quarterback in a single year.

Manning threw two of the scores to Demaryius Thomas, who finished with eight catches for 99 yards.

Broncos linebacker Von Miller returned an interception for his first NFL score.

The Broncos held Tampa running back Doug Martin to 56 yards on 18 carries.

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Copyright 2012 The Associated Press.