Sepang, February 7 - Valentino Rossi said that he was back to being competitive after finishing up the first test runs for the MotoGP 2013 season with Yamaha in Malaysia on Thursday. "Physically its a bit tough, but I feel in better shape each day. Yamaha is rejuvinating me," the nine-time world champ told the press. Rossi moved back to the Japanese team this season after an unproductive two-year spell at Ducati. He pulled in third in test runs, behind Dani Pedrosa for Honda and teammate Jorge Lorenzo.