Tom McKibbin and John Murphy are among those who will have to complete their opening rounds on Friday morning at the Commercial Bank Qatar Masters after play was suspended.
On a disrupted opening day for the late starters, play was initially suspended due to a sandstorm engulfing Doha Golf Club.
Play resumed following a 63-minute delay but was suspended again just over an hour later due to the threat of lightning and subsequently abandoned for the day, with half the field yet to complete their rounds.
Northern Ireland's McKibbin was two over through nine holes at the close of play, while Cork native Murphy is one shot further back through eight.
At the summit, Scotland's Scott Jamieson made the ideal start in his last-ditch bid to retain his DP World Tour card.
In the first group out at 6am local time, Jamieson took advantage of ideal conditions for the early starters to card a flawless seven-under-par 65 and share the lead with British Masters winner Daniel Hillier.
The rain continues to pour ⛈️#CBQMasters pic.twitter.com/zIO8kSCI2f
— DP World Tour (@DPWorldTour) October 26, 2023
Defending champion Ewen Ferguson, fellow Scots Robert MacIntyre and Stephen Gallacher and Spain's Santiago Tarrio also completed rounds of 66.
"Delighted with that start," said Jamieson, who began the week 119th on the Race to Dubai and needing a top-50 finish to climb into the top 116 and retain his card for next season.
"It was pretty solid tee to green and I managed to hole some putts today, which has probably let me down in the last few weeks. Certainly been hitting the ball well enough to do better than I have done, but today was a different story.
"The only problem about being out first is it is so humid, but you obviously get less wind and the course is a little softer as well so thankfully I was able to take advantage of that.
"There's nothing to lose any more, right? If I'm being honest, the last month or so that's maybe been the issue.
"I've been worrying about the guys around me [on the money list] and trying to just keep my neck in front. I'm on the wrong side of it now and I've got to go and get it."
Additional reporting: PA
