What we know for certain - Justin looks concerned AF after a super-light takedown and asks him if he’s alright (lies after and says he thought Usman hit his head, which he didn’t and they are on a super soft mat and it was a super light takedown).
We don’t know exactly what Usman says but we 100% hear the word “popped.” Usman gets up like an old man bracing his hand on his knee and seems to stumble after and they immediately stop grappling.
As someone who has had two knee surgeries (meniscus repairs) I know all too well the “popping” sensation. It can happen and then a moment later it’s normal but you know something is wrong. Typically unless you put it in a similar stress position (i.e. grappling compression) it won’t “pop” again, it needs to meet force resistance to trigger it. I could do yoga, run, HIIT workouts, hit pads and more without issue, but the second I tried grappling anytime it went to an inner butterfly position it would pop.
Usman has wrecked knees, who knows what issues he’s been dealing with for years, and Leon absolutely savaged them the last fight like 50 low kicks with power.