Denver Broncos linebacker Todd Davis will be sidelined for three-to-four weeks after suffering a partial calf tear during the first day of training camp on Thursday, per Zack Kelberman of 247 Sports.

This means that Davis could miss the entire preseason.

Davis was carted off of the field near the end of Thursday's practice, as he was unable to walk under his own power. He then underwent an MRI, which revealed the tear.

“It was the very last (No.) 1 rep I had of the whole day. The very last play,” David told Mike Klis of 9 News. “I went to plant and run towards the ball, the ball was thrown and I just felt something kind of pull in my calf. Nothing major happened.’’

The 27-year-old is coming off of a 2018 campaign in which he played all 16 games and racked up 114 tackles, an interception, seven passes defended and a defensive touchdown.

Davis, who played his collegiate football at Sacramento State, went undrafted but eventually landed with the New Orleans Saints in 2014. He appeared in just six contests with the Saints that season before being acquired off waivers by the Broncos that November.

By 2016, Davis was a starter for Denver, participating in every game and totaling 97 tackles, a forced fumble, a fumble recovery and a defensive score.

The following year, Davis registered 82 tackles and a sack through 14 games.

Meanwhile, the Broncos won just six games in 2018, marking the first time since 1972 that they endured back-to-back losing seasons. Denver has not made the playoffs since winning the Super Bowl during the 2015-16 campaign.