Didnt think anyone was gonna say it. But I love the right uppercut, left hook combo. Gotta throw em real close together. If you can manage it, what THEORETICALLY happens if the uppercut will hit, lifting his head up for your left hook to catch square on the jaw. Follow up with a right cross as needed. Doesn't work often (its boxing....he's trying to not get hit and hit you as hard as you are trying), but when it does, it usually leads to an early night.

Other than that, I'm a big fan of a short jab, cross, followed by the left hook to the body for the liver shot. Hopefully you can keep his hands up there long enough to catch it.

Lesse....one that worked well recently was actually throwing a lot of left uppercuts to his body (3 or 4 in a row), then going with the good ole uppercut to the chin. Once again, something most people won't fall for (and I've always felt a bit awkward throwing "uppercuts" to the body), but its something worth trying every now and then hoping to catch him anticipating the body shot.