Gronkowski caught a pass and went over the middle before a Browns defender upended him, his helmet colliding into Gronkowski's knee. The tight end collapsed into a heap on the field, clutching his knee while trainers went to check him out. He limped onto a cart and was later taken into the locker room. The Patriots have not given any immediate update on his status.
Before the injury, Gronkowski was having a quiet day, being held to two catches for 32 yards by the Browns defense. He has been struggling with multiple injuries for most of 2013. Gronkowski's 2012 season ended early when he broke his forearm, which required multiple surgeries to remove infections. He also had back surgery during the offseason and didn't make his season debut until Week 7.
Gronkowski's status will be updated when more information is available.