Mata backed fellow Spain international Torres to put his miserable first year at Chelsea behind him - the striker was praised by Villas-Boas after his part in the victory at Wolves on Monday.
Mata said: "Torres was very good in the last game. He wanted to play a full game, is training hard and wants to contribute to the team.
"He can rest assured that the team and the coach all have confidence in him. I'm sure he will score many goals for the club."