Complex sentence: In the 2003--04 season, he injured his hip and had to have major surgery and missed most of the season, but returned late to helped the Leafs finish with their best record in franchise history.
Split into simpler sentences: In the 2003--04 season, he injured his hip and required major surgery, missing most of the season. He would return late to help the Leafs finish with their best record in franchise history.