Sounds like he won the fight!
Keep an eye on the wounds, as Dawn says.
He might have picked up a bite on his back end if he retreated (running away wounds at the back, battling wounds at the front, see?) so worth having a poke around his hips to see if there's any sensitivity there. Bites go manky worse than scratch wounds, and would probably need ABs as the saliva in cats mouths is grizzly stuff choc full of evil bacteria that will infect a bite wound causing a hot rancid abcess. The cats temperature will increase, appetite loss and general lethargy are the main symptoms to look out for if the wound is hidden under fur.