Chelsea boss Jose Mourinho was delighted after striker Diego Costa scored on his first game since returning from suspension.
The Spaniard was banned by the Football Association for violent conduct during the 2-0 win against Arsenal in September.
He scored in the 34th minute of the game and created the second in the 54th minute to give his team all three points against Aston Villa.
"It's good [Diego Costa did so well]," Mourinho said.
"He was very strong. Against Arsenal he was very good, then we lost him for three matches and I knew he would be good. I cannot say goals but the way he was working in the past two weeks with us I knew clearly he would bring something positive for us.
"[Loftus-Cheek's substitution?] I wanted more solidity. He is brilliant with the ball. He doesn't look like a 19-year-old boy with the ball; he looks a solid, stable, mature player. He is fantastic in his vision and the way he analyses the game and the decisions he makes in the game.
"But without the ball we cannot compare him tactically with the others, and in this moment, again, it was one decision in favour of stability and control."