tips on how to deal with this guy in sparring

Could you not hit him with the right cross followed by right hook ,

Are you much taller than this guy ?

I would say you need to slip it and counter punch , give this guy something to think about he will have to change his tactic , if he's just doing the same thing over and over again then find the best punch to catch him with and execute the game plan

 

feints... bait out the upper cut

 

That is good advice...This guy is far from limited. The slipping inside an opponent's jab and countering with the left uppercut is one of the prettiest moves in boxing.
Hitting him with a right hand is going to be really hard, unless you can throw a right hand while your left arm is extended. That is what timing does to you.
Turn your body, get your left hip and shoulder forward. Keep your right hand where it is supposed to be, then use it to catch his left uppercut. Throw a left hook.

 

There in lies the answer , switch southpaw and upset his rythm

if you cant do that then here's some tips from a website

http://boxing.isport.com/boxing-guides/how-to-counter-uppercuts

 

Turn your body, get your left hip and shoulder forward. Keep your right hand where it is supposed to be, then use it to catch his left uppercut. Throw a left hook.[/quote]

Also a good way to beat an uppercut

 

That guy is missing something...What is happening is that the OP is jabbing, the other guy slips, steps in as he slips and pops the left uppercut. the guy is timing him, this is an advanced move if you can pull it off. If he can, and the OP switches to southpaw, he'll do the exact same move. Slip outside the right jab and throw a left uppercut.
The timing is the essence here. If you can't work with that, he'll hit you all day.

 

Also a good way to beat an uppercut[/quote]
The left hip being turned blocks his right uppercut. Keeps his right hand in general out of the picture, unless he really loops it.

 

Im no expert and you guys probably know far more than me , but to me it sounds like the OP is'nt confident enough in his speed or technique against this guy maybe he needs to spar someone else for a bit and try a few things and come back to this guy with some new tactics

Me personally id wind him up , give him a bit of lip and make him angry , once he loses his cool he will start doing things he would'nt normally do and then you pounce on him, punch with real conviction and show him who's boss ,

Though to be honest your best to listen to the other guys as they will probably have the best answers to your problem

 

That is exactly right. When you turn your body, it gets your shoulder behind your arm, that will help you catch his punch. it will also put you in a spot to throw the hook.
How square up are you to begin with?
Turn your hips, not your torso. Do you see the difference? Put the weight onto your left foot when you turn your hips.

 

this guy who u claim is very limited, is obviously more skilled than you are giving him credit for... probably more than you as the uppercut to counter a jab is not the easiest of technique to time... has your coach not given u any ideas?

 

It would be nice to know your height and wait , a bit about your experience and how you like to fight.

 

Your giving away a lot of weight , this guy is over a stone heavier and thats probably why your wary of his power.

Is it possible for you to bulk up a bit ? with weight lifting and a bit more nutrition to get your weight up

Its great that you have an excellent Jab , its one of the most important punches as it creates openings and also keeps the other guy on his toes , i would try and work on your accuracy and speed of your jab , make sure its snapped out with a bit of power that will make your opponent know he's taking it , but you also need to follow it up with something when you have the chance ?