i don't think there was intent to injure or hit the knee but that kind of tackle attempt seems to create a decent likelihood of some sort of injury occuring. heck even in the NHL they give penalties for low hits like thatsmastroyin said:A lot of people are complaining about the hit but it really looks like he was going for the thigh area and Gronk's stride put the knee there. The Patriots took out Gordon on a similar play later in the game. I was in the car but Zo was basically saying it was all about the fact that they are so concerned about concussions that guys have had to adjust to cutting low on these tackles so they don't get flagged for illegal hits. I realize Zo probably complains about that a lot, but he is pretty much a homer and didn't think the hit was intentional, bad, cheap, or dirty, at least at the time. Maybe the replay would have him thinking differently? I just watched it and it looks more like bad luck than bad intent.