one of the previous posts above is correct. Guys in that light of a weight class won't fatigue. And if he's THAT good of a wrestler, with great balance, base, timing, power, speed and is learning sub/positioning skills....well then, you are just going to have to learn to lose most of the time. A guy that is physically gifted and has athleticism and great wrestling ability is a tool that is hard to teach. And a guy like that will always have an advantage in a JJ match. Pushing the action hard, and using superior physical traits and having around the same level sub skills as an opponent is usually going to get you the win. You just have to face up to that.