Hudson Swafford shot a second-round six-under-par 66 to share the lead at the Zurich Classic of New Orleans before play was suspended for the day due to inclement weather.
Swafford carded six birdies to lie 11 under overall alongside fellow American Boo Weekley, who still had three holes left when tournament organisers decided to suspend play - with the action due to resume at 8am local time (2pm BST) on Saturday.
Swafford, one of only eight of the top-20 players to complete their second rounds, shared his six birdies equally between the front and back nines and has yet to card a bogey in 36 holes at TPC Louisiana this week.
Joint overnight leader Weekley was also bogey-free in his 15 second-round holes and added three birdies to take a share of the lead.
Swafford's score of 133 is his lowest 36-hole score on the PGA Tour in 43 events and he insists it was only a matter of time before he hit form.
"I've seen this coming. I'm playing really solid golf," the 27-year-old told the PGA Tour website.
"I've done a really good job of taking on trouble, and not being scared of the bunkers and taking good angles into the pins.
"That's what you've got to do on a Pete Dye course. It's not always about having the perfect drive in the centre of the fairway, but the best approach shot into the greens because it makes it tough to bend.
"I'm just chipping well and just really rolling it nice.''
Brendon de Jonge, who led alongside Weekley after the first round, is one of a five-strong group of players a shot behind the leading pair after carding a two-under 70 on Friday.
De Jonge birdied the first two holes before undoing his fine start by bogeying the fourth. Twelve par holes ensued before the Zimbabwean picked up another shot at the 17th before closing with another par.
Cameron Tringale carded a best-of-the-day completed round of 65 - including five birdies and an eagle - to join De Jonge, Jerry Kelly, Daniel Berger and Jason Day on 10 under - with the latter three unable to complete their rounds before wet weather halted play.
Meanwhile, a back injury forced defending champion Noh Seung-yul (one over par) to withdraw from the tournament after playing seven holes of his second round.
Source: PA
