His body most likely locked up because he hadn't recovered from the hit he took on Sunday which looked much worse than the second one. The second one looked like his head didn't make much contact with the ground but I am sure that it still shook his brain up enough to further damage what had previously been injured.Honestly didn’t look like an awful hit but to see his body lock up like that didn’t look good. Instant head trauma. Have to wonder if this could end his career? Concussions can be long lasting.