Jason Day has exploded to life on the back nine to nab a share of second, just one stroke off the pace, after the first round at the PGA Tour at The Sentry in Hawaii.
Australia's No.1 was labouring along at level with the card through six holes before collecting six birdies and an eagle to wind up with an eight-under-par 65 start to the new year.
Only American Sahith Theegala bettered Day with a 64, capped by his 10th birdie of the day at the par-5 18th hole that edged him clear of the field.
