kind of trips him up. As he lands he pushes off (with the left foot) and falls. To me, when watching it looks like when he lands on it he pushes off it, that's when he hurt his ankle. There is also a possibility that as he was pushing off the ute player swiped at his ankle which caused a strange torque resulting in the injury. We haven't been told what the injury is, but that's what it looks like to me watching the play. But it was kind of blurry on my computer as I watched the play.