Complex sentence: Vardon convalesced at the nearby sanitorium while recovering from tuberculosis and his association with the course spanned many years, including, it is said scoring his only ever hole-in-one on what is now the sixth.
Split into simpler sentences: Vardon convalesced at the nearby sanitorium while recovering from tuberculosis and his association with the course spanned many years. It is said that he scoring his only hole-in-one on what is now the sixth.