Playing in the intended morning wave alongside last week's Pebble Beach victor Phil Mickelson and Xander Schauffele, Spieth chipped in from off the green at the hard par-4 second (his 11th hole) for a birdie to take the lead at five-under-par.
They were a shot ahead of J.B.
He's slated to go back out in the afternoon to start his second round while Spieth and the group that teed off first on Thursday won't start their second round until Saturday morning.More news: Jackie Kennedy’s Sister Lee Radziwill Died At 85
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'I know it's a learning experience every time you have a weekend off, but I'm fed up of learning experiences, ' he said. Seamus Power was level par through 15 to stay one under overall.
Giving new meaning to the concept of "saving" par, Phil Mickelson showed Thursday he can get by on a hole without ever touching the fairway or using his putter.
"Everyone thinks of [No.] 10 as a birdie hole because you can hit 3-wood at the front edge, and [Spieth is] like it's not, it plays 4.5 [stroke average]", said Hickok, who made par at the 10 hole in Round 1. Mickelson, coming off a birdie Monday in his victory at Pebble Beach, had yet to make a birdie and was 1 over through 12 holes. The starting time at Riviera was at 6:40 a.m. because it has a 144-man field and limited daylight this time of the year. But with thick clouds that brought the rain, it made the sky even darker and players had trouble even seeing their shots.
Steve Rintoul, the senior tournament referee, said in a PGA Tour interview that a "very unusual and unfortunate set of circumstances" led to the decision to wipe out the morning's scores. "But if I had it do over again, we would have delayed the starting times".