Video: Klay Thompson Heads to Locker Room After Crashing on Drive

Klay Thompson left the game in the second quarter of Warriors-Rockets after crashing hard on a drive. It goes without saying that this would be a substantial loss for Golden State if there is any lasting issue; the Warriors are already shorthanded this evening, playing without Andre Iguodola.
Here is the video — after he fell, he clutched his right knee:
Here's the Klay Thompson injury just looks like he falls on his knee pic.twitter.com/p8su8HUdcF
— gifdsports (@gifdsports) May 23, 2018
Or was it an ankle injury?
Another angle shows Klay Thompson rolled his left ankle and was stepped on by Capela on the play in question. pic.twitter.com/h9n9PTfskB
— RealGM (@RealGM) May 23, 2018
Hopefully, Thompson is alright.
UPDATE: Thompson has a knee strain, but should return this evening.