Broncos Place OL Matt Peart On IR, Promote OL Calvin Throckmorton

For a second straight week, the Broncos will move their starting left guard to IR. After placing Ben Powers on the injured list with a biceps injury, the Broncos are sliding Matt Peart off the 53-man roster.

A knee malady will send Peart to IR, according to 9News’ Mike Klis. They are moving veteran O-lineman Calvin Throckmorton to the 53-man roster from the practice squad in a corresponding move, Klis adds. Denver will also bump special-teamer J.T. Gray to the roster from the P-squad, with Klis adding tight end Garret Wallow is heading to IR.

Peart is believed to have suffered the injury on the third play of the Broncos’ London-based matchup against the Jets, per Klis. Peart struggled in the game, committing three penalties (including two holding infractions), but was playing hurt. An otherwise healthy Broncos O-line will need to make another adjustment at left guard.

Re-signed this offseason, Peart became the next man up for Powers — who had not missed a game during his Broncos tenure until the London trip. The team still has some options here, including Throckmorton. A former Saints spot starter, Throckmorton lined up with New Orleans’ first-stringers in 20 games from 2021-22. This included 14 starts during Sean Payton‘s 2021 New Orleans finale. Throckmorton, however, has played in only three games since joining the Broncos in 2024.

Denver uses former UDFA Alex Palczewski as its sixth O-lineman in jumbo packages, but he is a swingman as well. The team also has backup center Alex Forsyth, who lost the 2024 center competition to Luke Wattenberg, as an option now that Peart is out of the picture for at least four games. The Broncos hope Powers will be back before the regular season ends, but they will need to make another switch for the foreseeable future.

A former Giants third-round pick, Peart worked mostly as a backup during his New York rookie-deal stay. He has started at both guard and tackle in Denver, having re-signed on a two-year, $7MM deal. None of Peart’s 2026 money is guaranteed.