Shane Lowry and Seamus Power make good starts at rain-affected Pebble Beach
Rick Lamb, Seung-Yul Noh and Joel Dahmen share lead at the AT&T Pebble Beach Pro-Am
Shane Lowry has started well in California. Photograph: Jared C. Tilton/Getty Images
Spieth is one of four of the world’s top 10 who are hoping to avoid being upstaged by their celebrity partners in California and he made the best start, placed at three under when the inclement weather halted his round after 16 holes.
Ireland’s Shane Lowry finished his second round in a tie for eighth, after a two under par 70 on the Pebble Beach course.
In joint eighth with him is Seamus Power after birdies on the first, second, seventh and 11th holes. Bogeying the par 3 fifth hole and the par 4 eighth.
Padraig Harrington meanwhile is two over par, hitting three bogeys in a miserable front nine, recovering somewhat with his only two birdies of the round on the 15th and 18th.
Spieth fired six birdies and two bogeys in treacherous conditions on the Monterrey Peninsular Country Club and will hope to lay the foundations of a first PGA Tour win since May 2016.
Justin Rose is also on one under with six holes to play as much of the field are forced to finish their first rounds on Friday.
Each player and their celebrity partner plays one round at Pebble Beach, Spyglass Hill and Monterrey Peninsular Country Club over the first three days, with the leading 25 pro-am teams and top 60 professionals and ties returning for the final round at Pebble Beach on Sunday.