Original sentence: After three knee operations, Philippoussis embarked on a protracted comeback.He made the 2003 Wimbledon final, finally losing to Roger Federer, 6–7(5), 2–6, 6–7(3)
Edited sentence: After three knee operations and a protracted comeback, Philippoussis avowed a new seriousness to his sport.It seemed to work, as he made the 2003 Wimbledon final, finally losing to Roger Federer, 6–7(5), 2–6, 6–7(3)