Last week in fact: guy chased a ball into the corner to save it, which he did, but he also smacked the side of his face on the door frame and had to get 8 stitches right by his eyebrow area.
Couple years ago group I played with in the morning , guy dove and turned to save a ball, slid into the door frame corner (made of wood) , resulting in a decent gash in the back of his head. We had a couple doctors in the group, one of them drove home real quick to get some lidocaine and stitched him up .