Wardley hit him so hard

[El_Mero]

he looked like he seized up!

[M312]

He literally caved his head in. Career ending KO (or worse).

I'm worried about the guy. Hope he goes straight to hospital.

[tomhawq]

That's the way to do it. End it when the opportunity shows up before it gets tougher like in the first fight.

[Mammoth]

That was scary stuff

[eco1]

I felt it here!

[Bullrider]

Based on what I saw in the first fight, can't blame Wardley for stopping Clarke early. It could get worse, otherwise.

[moochi]

Surprised none of the commentators mentioned the obvious immediate dent to his skull (looked like the sphenoid)

That last punch was what fractured his skull on the left hand side (the side his face seized up on)... let's hope no internal bleeding . That's career ending for sure and hopefully he recovers and can live a normal life.