ENGLEWOOD, Colo. (CBS4) — Denver Broncos linebacker Todd Davis was carted off the field near the end of practice on the first day of training camp with what appeared to be a lower leg injury. He has a partial calf tear that will likely put him out for 3-4 weeks.

An MRI on Thursday afternoon revealed a partial calf tear for Davis. He is expected to miss three to four weeks, according to a source.

The Broncos lack depth at inside linebacker, but the good news is, with that timeline Davis will be back for the start of the regular season.

Alexander Johnson, Keishawn Bierria, and Joe Jones will likely work alongside Josey Jewell as the Broncos search for a replacement for Davis.

Todd Davis #51 of the Denver Broncos warms up before the game against the San Diego Chargers at Qualcomm Stadium on October 13, 2016 in San Diego, California. (Photo by Harry How/Getty Images)

“Todd is one of the most vocal leaders on this team,” said second-year linebacker Bradley Chubb after practice.

“He always knows what he’s doing, always reliable and always making the right calls. He’s a huge part of the defense.”

The Broncos will continue training camp on Friday.