On this week's episode of GOLF's Subpar, 5-time PGA Tour winner Billy Horschel joins former PGA Tour pro Colt Knost and his close friend and on course rival Drew Stoltz for an exclusive, in-studio, interview. The winner of the 2014 FedEx Cup talks how he ended up playing at the University of Florida, his head to head showdown with Rory McIlroy at the Walker Cup, and the putting tweak that led to his biggest payday.