Lay her down and fuck her.

You pull Tonya out of the corner, holding her up as she slumps against you. You carry her backwards a few steps, getting well out of the corner, making sure everyone has a good view of what you're about to do, then lay Tonya down on her back. You spare the ref a look to see if she's going to count, but she just stares at you, so you continue, pulling Tonya's trunks off with your teeth. Tonya's already obligingly stripped your own bottoms off, so you're ready to proceed, laying on top of her and gently pushing into her; she's dripping wet, moaning as you bottom out inside of her. You start fucking her slowly, maximizing her pleasure while minimizing your own with short, deep strokes; Tonya doesn't try to escape, instead reaching up and wrapping her strong arms around you, pulling you down closer to her. She pants in her ear as you fuck her, trying to think of anything else but your opponent's sweaty body pressing against you or the noises she's emitting. Your deep strokes pay off as you feel her pussy clenching, ramping up for her climax; you finish her with a dozen hard thrusts, Tonya wailing in pleasure as she cums, her arms falling off your body as she comes down, completely limp from her orgasm.

Well, it was close, but you got her off. You're sure she won't get up from this; it appears you've defeated your opponent in a boxing match without either one of you throwing a punch! You pull out, leaving Tonya flat on her back, a completely relaxed smile of satisfaction on her face. She doesn't stir as the referee counts her out; the official comes over to hold your right hand up in victory, your hard cock waving proudly in front of you, coated in your defeated opponent's juices.