Seamus Power in contention before early finish in Mississippi
Ireland's Seamus Power was two shots off the lead with two holes remaining when play was suspended for the day at the Sanderson Farms Championship.
The 30-year-old, who partnered Padraig Harrington at last summer's Olympics, followed his opening 68 with five birdies against a single bogey over the 16 holes he was able to complete at CC of Jackson.
Power - who was well placed on the 17th fairway when the hooter sounded - lies two shots off leader Ryan Armour, with the American having completed a 68 for a 10 under halfway total.
With the top 50 in the world eligible to compete in the WGC-HSBC Champions in China, the top ranking player in the field is world number 75 William McGirt, who sits tied for 34th on three under.
Armour is a shot clear of South African Tyrone van Aswegen, who enjoyed a round of 65. Former US Ryder Cup player Vaughn Taylor is level with Power after carding a 66.
Power was the only player with holes remaining who looked likely to challenge Armour for the halfway lead.