Rob Gronkowski leaves with knee injury after hit from TJ Ward (GIF)

Rob Gronkowski was carted off the field in the third quarter of the New England Patriots-Cleveland Browns game on Sunday after taking a hit to the right knee from Browns safety T.J. Ward.

Gronk caught a pass from Tom Brady and was streaking down the field until being cut down by Ward. He was down on the field with an apparent right knee injury and could not put any weight on his leg. It was so bad that players from both teams expressed support for the tight end when he was carted off.

Gronk is the Patriots’ most dangerous receiving weapon, so this would be a huge blow to their offense. He already missed the first six games of the season to recover from offseason forearm and back surgeries, and now he could be out the remainder of the season.

Gronk had 37 catches for 560 yards and four touchdowns in six games this season. He had two catches for 32 yards before being carted off.

GIF via GIFD Sports; Image via B/R