Believe me I can empathise. I fought one guy in Basic much bigger than me, a black guy from Detroit, but I was used to doing that. Problem was after the first 30 seconds I knew he had boxing training because he had a whip like jab that kept landing on my nose and good cardio for a guy his size. After three rounds it was one of those , “Haha you couldn’t knock me out Ray” moments. :-}
With me there was no boxing.....only hitting...LOL!
He must have hit me 100 times....no knockout though.(miracle)