What are combos you've used in sparring or in the ring that you feel are effective? My favorite combo when I used to box was if my jab caught them, throw a straight and then a left hook to the ribs/liver. That shot to the body ribs usually does it. If the jab doesn't hit, then a right hook past the guard (or reverse side if you stand sp) And a left uppercut into the ribs/solarplexis will do it... I've never seen anybody take a hard shot to the head and be able to deflect a bodyshot well, they just aren't on guard for it. Problem is that when someone lands a headshot they immediately want to go for more and more in the hopes of knocking them out. It's hard to knock someone out, but if they are dazed you can make them hurt pretty easily. For muay thai I like a similar combo which is just jab, straight, push kick (if standing orthodox then use rear foot, the straight sets you up for it well). Each shot sets up the stance for the next one perfectly for maximum power and balance. Also chances are if you're close enough for a right hook you can swoop in and throw elbows. Left hook, right hook, downward elbow to finish it. That's an effective combo I've seen in a lot of muay thai fights.