Justine Henin is certain that she’s done playing tennis. ‘I don’t think I will ever come back. I think that it’s important just to move on,’ Henin said at Roland Garros on Saturday, the day before the French Open starts. Earlier this month, she became the first woman to retire while No. 1 in the WTA rankings, opting not to try for a fourth consecutive French Open championship. The 25-year-old Belgian said Saturday that she didn’t retire because of any health issues ‘ she just does not feel the passion for playing tennis that carried her to seven Grand Slam singles titles.