Saturday’s third round of the Tour Championship was suspended because of lightning with world number one Scottie Scheffler leading by one on 19 under.
Tokyo Olympic champion Xander Schauffele is his nearest rival with 14 players still to complete their round at East Lake in Atlanta.
Play will resume at 14:45 BST on Sunday with the final round to follow.
Northern Ireland’s Rory McIlroy is four shots behind Scheffler with two holes of his third round remaining.
McIlroy was five under par for his round, having carded an eagle and four birdies in his 16 completed holes.
American Justin Thomas, winner of this year’s US PGA Championship, will return to a two-foot birdie putt on the 18th. He is currently six under par for his round and five off the lead.
Scheffler and Schauffele had both managed 12 holes of their third round, which had already been delayed by 58 minutes because of the weather, when play was finally halted.
Masters champion Scheffler began the tournament with a four-shot advantage over Schauffele as players began the season-ending event on different scores determined by their place in the FedEx Cup standings.
