Fading tennis star Mark Philippoussis has vowed to fight back from his latest knee injury to complete a “Cinderella story” finale to his tennis career. Philippoussis, 31, said he was desperate to finish his career on a high. “I just want to play one more great match or have a great tournament,”. He has moved to Melbourne to aid his rehabilitation from a fifth major injury — this time torn cartilage in his right knee…read article…