June 5 (Reuters) - Rafael Nadal says he "almost never" picks up a tennis racket these days, a striking admission from one of the sport's greatest champions as a new Netflix docuseries chronicles the highs and lows of his career. The Spaniard, who retired in 2024 after a glittering 23-year professional career that yielded 22 Grand Slam singles titles, said he had made his peace with stepping away from the sport despite remaining physically active.