SPANISH tennis player Rafael Nadal beat Serbian Novak Djokovic 3-1 at the US Open last Tuesday. This is his first US Open championship (锦标赛) and is also his greatest tennis award yet. The 24-year-old has nine Grand Slam titles (大满贯头衔). People now focus on when he can be the best of all time. “My goal, all my life, was always the same: keep improving,” said Nadal.