A Golf Cart?

Yesterday at Coors Field, Carlos Gonzalez made a spectacular running catch...then slammed into the wall.
He injured his wrist but it looks like it isn't a serious injury, thank goodness.
Since he hurt his right wrist my question is, why did he need to be placed on a golf cart and driven off the field. He couldn't have walked off? His legs weren't hurt. To me the golf cart added unnecessary drama.