You still need to jab your way inside. Straight back hand to the body is your friend following it with a hook up top. When inside double hooks to the body and never move out in a straight line always exit to one side and pivot. Also feints will help back your opponent to the ropes and corner.
if you are orthodox (right handed), lean a little to your right, make the taller man bend down, and then attack him with hooks and right hands from the crouched position. Mix in body shots and head shots with lots of eye feints and foot feints.
Contant head movement while feinting your way in with the jab. The to the body shoulders chest and head, just to make sure you get in skipping. Then combinations mixing to the body and the head.
1. Staying chest‑to‑chest where reach doesn’t matter. 2. Your head movement is your jab. Slip--step in--fire hooks/uppercuts. 3. A single jab gets you countered. A double or triple jab hides your entry. 4. High–low–high movement can make the taller fighters miss and reset their rhythm.
A few oldies: Follow the other guy’s jab in. When he jabs, block it and step forward (bend your knees and drop a bit to get under a right hand lest he’s throwing a 1-2 and you walk into it). One of the first best tricks I learned from a 100-amateur-fight veteran was to follow that jab — his lead hand is in retreat back to his shoulder/head so there’s a gap you can fill by closing that distance. It’s using his jab against him. (Even if you eat the jab, take the step.) Cut off the ring. Always. If he slides to his right, you slide to your left … and vice versa.If you’re chasing him around like a puppy dog, you’re not going to get closer. This puts mental and physical pressure on him. Banging a guy on the hips helps take away his legs/mobility. It’s a game of attrition so one shot doesn’t do it but it helps as rounds go on. If he’s hard to hem in (as in he’s using lateral movement well to stay away), throw hooks to the torso from the side he is goign to (so left hook if he’s moving to your left, right hooks if he’s going to your right) and it’s OK if all you get as arm … but leave your hand there and pull yourself to him. It’s a trick Roberto Duran was absolutely fantastic at … once you get that hook there, you cut off that avenue and are able to pull yourself closer … think of it as reeling in a fish — only you’re the fish and you reel yourself to him. If you miss badly, it’s not a bad idea to lunge forward with your chin tucked behind your shoulder so you make contact with that shoulder … and you’ve turned a missed opportunity into a positive by getting yourself in close range. Work your free hand if he ties one up. If you end up in a clinch and he tries to manhandle you, go with it … let him use up the energy with wrestling tactics and do all the work while you relax. Don’t smother your punches. Take a little half-hop back at an angle and throw. Or slide/pivot a little to free up space to punch.
As an orthodoxed fighter get under his jab while going in hard with that straight right to his ribcage.