Kalil is 3rd Panthers offensive lineman to injure his knee
The team said Kalil traveled to Florida on Monday for a second opinion on his knee from Dr. James Andrews and the decision was made to have the procedure.
Kalil becomes Carolina’s third starting offensive lineman — and the second tackle — to go down with a knee injury.
The Panthers lost right tackle Daryl Williams, a second-team All-Pro in 2017, to a torn medial collateral ligament and dislocated patella and guard Amini Silatolu to a torn meniscus. There is no timetable for their return.
Kalil signed a five-year, $55 million contract in 2017 to protect Cam Newton’s blindside, but he struggled last season.