The Blues attacking midfielder inspired his club to a 4-2 derby win over Tottenham on Saturday after recently being omitted by La Furia Roja coach Vicente del Bosque
The former Valencia man was left out of Vicente del Bosque's squad for the world and European champions' October World Cup qualifiers but bounced back from that rejection with a superb showing in his club's first match after the international break at White Hart Lane.
The 24-year-old scored twice and set up Daniel Sturridge as Chelsea turned a 2-1 deficit into three points and stressed that he is focusing on his club duties rather than worrying about La Roja.
"I don't know [whether anyone was watching from Spain]. I just try to improve with every Chelsea game I play," Mata told reporters. "I just wanted to do my best for my team, and in this moment I am feeling really well.
"I had another chance for a goal but Fernando [Torres] was in a better position than me to score. But the most important thing for me was victory. Before the game we wanted to stay top of the league and we are still there."