- Rioli attempts a block
- Rioli misses but his trailing hand possibly makes contact with Ridley's head, difficult to tell as Ridley doesn't initially react
- Ridley then throws his hands up in the air, perhaps attempting to draw the attention of an umpire to pay a free kick
- Ridley falls and, for some reason, fails to put his hands out to protect himself enough to prevent his head from hitting the turf
He landed fine though.