Like the year before, it all came down to the final hole. That's where Stefan rolled in a 6-foot birdie putt to beat Bob and Kevin Tway and Vijay and Qass Singh by a shot.
Stefan became the youngest winner in the event's history when he teamed with his father to win in 2006, when he was just 15. He remains the only teenage champion in tournament history.
The Langers were the first father-son duo to successfully defend their win at the two-day tournament since Raymond and Robert Floyd in 2001.