Thomas, who won both Hawaii events previous year, was well placed on four under with six holes remaining, but wild shots at 13 and 15 led to penalty drops and a pair of double-bogeys while he dropped another stroke at 17 before a birdie at the last saw him sign for a 75.
Spaniard Jon Rahm (70) is at five under alongside Spieth, while defending champion Justin Thomas slipped back to even par after his 75.
Tournament golf is in good hands with the likes of Fowler and - without knowing the level of his ballroom skills - let us hope he can put his best foot forward and win his first major this year. I need to do that some more. "I think with the amount of depth and talent at a younger age, mixed with the guys in their 30s that are playing - No. 1 in the world, D.J. - some other phenomenal players that you would call in maybe their prime, and then obviously the major question, which is what's it going to be like with Tiger coming back.it's a pretty special time to be a part of professional golf". That includes the 2008 U.S. Open, his 14th and most recent major.
Leishman ran off four straight birdies around the turn and holed a 20-foot birdie putt on the 17th hole.
"I'm very excited to be back at Riviera", Woods said.
The two leaders will be wary of the presence of 2013 Kapalua champion Johnson after he recovered from a poor start to roll in seven birdie putts and card a 68. "And not only my view of myself, but my view on being the man in the arena". So finally getting to have JT and Jordan congratulate me at the Hero [World Challenge], felt good. "And like I said, starting here it's a nice way to ease into the year in a way".
Chris Stroud hits from the second tee during the first round of the Tournament of Champions golf event, Thursday, Jan. 4, 2018, at Kapalua Plantation Course in Kapalua, Hawaii.