My vote is the spinning back kick, And fairly low so it’s likely to hit him even if he swiches levels.
Even if it hits his guard, I can possibly fracture hus hands.
i don’t think any punch matter since the wrestler ducks under it.
Knees - very overrated. Requires a lot of timing and precision and you may need to grab to do it. A knee to the stomach generally doesn’t do anything (Bob Sapp tried it against a Gracie).
You obviously knee if the clinch happens but I wouldn’t wait for it. I’m taking him out as soon as he gets in My range. Strikers are too often passive.
Knees have proved efficacious if a wrestler takes a leg shot from too far away.
Which a good wrestler might never do in wrestling, but sometimes do as a result of getting goosey in the striking rulesets, or because they get tired as the fight rolls on.
Other than than, a jab and right cross in combination, with footwork, can frustrate and knock out a thrower.
A11 mentioned a spinning back kick, and spinning fists, elbows, and kicks can be effective against an angle cutter, hungry for the bait of a back being exposed, especially if they sugar towards cutting the angle predictably to one side as a habit.
@Dr.Gonzo A high level spinning back kick to the stomach leads to loss of air supply to the lungs. And when that happens, your body will stop moving. If a wrestler freezes and can’t move, he’s cannon fodder for a striker.