Segata Sanshiro is a pretty good hand to hand fighter and he even has some energy abilities to back him up. He is skilled as you can probably guess from his record. Still, Kimimaro is just a lot more powerful. He’s a ninja whose abilities transcend that of most mortals. His strength and speed are just unreal and Segata will quickly start to get overwhelmed. He won’t be able to keep his proper form during the stress of this match and that’s when Kimimaro will finish him off. Kimimaro wins.