Jordan Spieth in sparkling form to move four clear at season-opener in Hawaii

A scintillating round of 64 from world number one Jordan Spieth gave him a four-shot second-round lead at the Hyundai Tournament of Champions in Hawaii.

Spieth, who started the day one shot behind first-round leader Patrick Reed, fired seven birdies and an eagle to go round in nine under par, 16 for the tournament.