It was the Third round, toward the end when Silva realized Rashad had controlled the fight was just playing for points. Then he attacked full force and got two good shots to Rashad who was dazed. Rashad somehow kept his head and went for the take down. Then once separated and Rashad still looking dazed, Silva decided to rest.
You're being way too hard on Evans, he's coming back off his first knockout (ever) was obviously fighting not to get knocked out. He had no killer instinct, no wish to end the fight quickly. Just to survive and get the win via cards, that's to be expected. But one thing I saw was Evans go back a bit. By going back, I mean back to his roots. He consistently took Silva to the the ground and manhandled him in everyway possible. It was great to see Rashad going to his strengths rather than attempting to be the knockout king we all know he isn't.
As for Silva, he choked. He let the first two rounds get away from him and in the third he knew his only option was to get a knockout or viciously dominate the round via knockdowns. He was facing a scared former champ and when he saw weakness he backed off. Can't feel sorry for him.