As first reported by NFL Media's Ian Rapoport, Panthers wide receiver Kelvin Benjamin tore his ACL during practice on Wednesday and will miss the season.
The Panthers later confirmed Benjamin's torn ACL on their website.
Benjamin's injury was suffered during Wednesday's joint practice with the Dolphins. Panthers coach Ron Rivera said the exact moment it occurred was when Benjamin "went to plant" and tried to make a "swim move."
"So it was unfortunate," Rivera said at the time, via the Charlotte Observer's Joe Person. "It's one of those things it could have happened in any drill. Unfortunately, it just happened then."
Though Rivera initially called the injury a sprain, he noted that Benjamin would undergo an MRI to determine the severity of the injury. The injury is worse than a sprain.
Without Benjamin, quarterback Cam Newton will have to rely more heavily on tight end Greg Olsen, and receivers Corey Brown, Jerricho Cotchery, Ted Ginn, Brenton Bersin and rookie second-rounder Devin Funchess.
Those receivers will have a tough time matching Benjamin's output. In 2014, Benjamin's first season in the league, he caught 73 passes, eclipsed the 1,000 yard mark and scored nine touchdowns.