Lydia Ko and her caddie Micky Millburn watch her putt at No. 18 during the opening round of the CME Group Titleholders at Tiburon Golf Club in Naples, Fla.

Lydia Ko and her caddie Micky Millburn watch her putt at No. 18 during the opening round of the CME Group Titleholders at Tiburon Golf Club in Naples, Fla.