Neither fighter looked particularly tired to start the fourth. Machida fired off kicks to the body but Weidman was the Terminator in his pursuit of controlling the pace of the action, not to mention the positioning. He was making sure it always looked as though Lyoto was bailing out while he was coming in.
Even when "The Dragon" was connecting, and he was early on here.
Weidman dipped low for a takedown but the Brazilian expertly avoided it. Back standing, he landed a hard left hook. Weidman stayed steady in the pocket but another left hand had him backing up for the first time in the fight.
A flurry had the champion against the fence. Machida went back to the body with kicks. He pushed Weidman against the fence and continued firing away with a varied offense. His volume was fairly low, however, and the champ appeared to recover as time wore on.
A lame takedown attempt on the challenger was stifled.
Signs of fatigue were glowing bright. Weidman shot in but Machida stuffed it again. He rushed Weidman unexpectedly and landed a huge left hand that stunned the champ at the buzzer.
Here we go for the fifth and final round.