Stopping the right uppercut ?

[Andre]

No, he is orthodox, 6 ft, bout 165 lbs. Sorry for the confusion, we are sparring at an mma gym but in boxing style with boxing gloves etc.

I certainly won't drop my left hand anymore or pull straight back, this guy has a very hard right uppercut and lets it go a lot.

I'm going to have to angle out, box him and really keep a tight defense.

I don't know about controlling the arm as that is a lil complex and sounds risky of me eating another hard uppercut whilst trying such a technique

Really, you are in an MMA ring with MMA rules if you have control over his right arm with your left arm or even if you have the path of his uppercut blocked by your left forearm, then he cant throw it clean.

Do you wish to deal with him strictly in boxing terms?

Q: Are you allowed to elbow them in the face while standing?