The ever-present, never-ceasing drive to keep improving is one of the pillars of golf. For anyone who loves the sport, it is perhaps the most relatable, constant aspect of why it's all so alluring.

Justin Leonard saw first-round Chubb Classic co-leaders Paul Stankowski and Mario Tiziani shoot 7-under pars on Day 1 to set the pace at the PGA Tour Champions event in Naples. On Saturday, Leonard ...