Rafael Nadal is loser that he misuses Medical Timeouts?

Really he used it to reduce his momentum? Did you watch the match? He hit a gorgeous winner to bring up set point and held his foot in anguish. He then surrendered the next 3 points without much of a fight and he called for the trainer when the score was at deuce. He also lost the first 3 points of the TB. I don't know how it benefited Rafa to call for the trainer when he was so close to winning the set.