The Carolina Panthers placed returning starting left tackle Matt Kalil on injured reserve with a right knee injury, the team announced Sunday.
According to a team release, Kalil played through knee soreness during training camp and the first two preseason contests. Kalil met with the renowned Dr. James Andrews in Florida, then underwent an arthroscopic procedure just days after the Panthers' second preseason game against the Dolphins. In January 2015, Andrews performed a scope of both of Kalil's knees, an operation that did not require him to miss any time.
In compliance with league rules, Carolina did not officially place Kalil on injured reserve until after 4 p.