Brake sensor issue limits Massa's Friday practice at Monza

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MONZA, Italy -- Felipe Massa was brought back to earth with a bang after his retirement announcement as a brake sensor issue significantly limited his Friday running.

Massa spent much of FP2 in the Williams garage before emerging late on, but only to complete a handful of laps, with his tally for the entire day just 38. Massa thinks the problems have left him up against it going into Saturday.

"Actually I couldn't do a long run because we had a little issue today, one in the morning and one in the afternoon," he said. "I had some issues with the brake sensors and for safety we didn't run. Then we decided to change the sensors and it was fine after but then I just did three laps at the end. So for me it's a little bit difficult, I think you need to ask Valtteri [Bottas]."

Friday was Massa's first time in the car since announcing he will call time on his F1 career at the conclusion of the current season. The popular Brazilian thinks the decision has lifted a weight off his shoulders.

"The difficult day was yesterday so now I'm just relaxed and thinking of doing as much as I can in these last eight races to actually put us back in front of Force India until the end of the year. That's the target and we will try everything we can, we know it's not easy.

"I was quite relaxed actually, I am quite relaxed. I am just thinking about doing the best I can in these last eight races and enjoy this moment, giving everything I can to do an amazing last eight races of the season. I'm happy and relaxed and really happy with my decision as well."