Ross D. Franklin/Associated Press
If Jordan Spieth wants to build on his successful January at the 2017 Waste Management Phoenix Open, he'll have his work cut out over the next three rounds.
Spieth, the headliner of this week's PGA Tour event in Phoenix, sits six shots behind Matt Kuchar, who sat atop the leaderboard with a seven-under 64 when play was suspended because of darkness:
Hideki Matsuyama and Brendan Steele, who both posted six-under 65s, are one stroke behind.
Kuchar's round included five birdies and an eagle on the par-three 13th hole. He went bogey-free for the round, thanks in large part to well-placed drives and strong iron play.