Maybe yes, maybe not.
Someone can break his arm/ foot or put him to sleep. who knows?
The real question is are you as good a striker as he is? do you have that kind of knockout power?
keep in mind this guy's a jacked 240, not a little 170lb jiu jitsu guy... now, I'm not sure how big you are, but for most men, that's a good size opponent.. the other problem is you have to be able to get him down to get a sub or arm bar/kimura/whatever... during which I'm sure he's gonna be raining big double XL fists into your head and face like it's goddamn christmas, and considering he was under Bas Rutten's tutelage for a good 2 years, he knows how to avoid takedown's... see what I'm saying ?
I'm not saying somebody can't sub him, but he knows to look out for subs and singles or doubles.. so it's obvious he'd be trying his best to take your head off in the process.