Cool Ko hangs on to notch first win as full-fledged pro

With the 18th pin and a championship in sight, Lydia Ko found herself in the rough again in a day filled with off-target drives.

The teen told herself she just needed one more important chip with the tournament on the line.

Poised and unflappable, Ko made the perfect pitch up to the green and birdied the final hole for her first LPGA Tour victory as a professional and third in all, holding off Stacy Lewis and Jenny Shin in the inaugural Swinging Skirts LPGA Classic on Sunday.