Play was halted for just over two hours due to heavy rains and thunderstorms during the round, before being suspended at 6:25 PM ET with 16 players yet to complete their rounds.
There is more rain forecast for Sunday, meaning there is a chance the tournament could be cut to 54 holes. The 16 players who have not finished will return to the course at 8:15 AM ET to attempt to complete their rounds.
Keoke Cotner and Mike Heinen are three shots behind Klauk at minus 6. Dave Stockton, Jr., Steven Alker, Tyler Williamson, Roland Thatcher and Eric Meeks are one stroke further back at 5-under. Stockton was the lone player of this group to complete his round, as he finished at 2-under-par 70 on Saturday.
Klauk started the day one stroke behind overnight leader Jay Delsing. Klauk battled through the tough conditions for a 1-under-par front nine. He birdied the par-4 sixth, then was able to cement his spot atop the leaderboard with a birdie at the par-5 10th.
'We've had so many delays recently that you just go with the flow,' said Klauk. 'The key in bad weather is if you hit it in the fairway, you'll be fine.'
Oberholser carded a bogey-free 66 Saturday, by far the best round of the day. He started it with birdies at four and seven.
The 2002 Samsung Canadian PGA Championship and Utah Classic winner birdied the par-5 10th to move to 3-under for his round. Oberholser later birdied the 13th, before posting one of the few eagles of the day at the par-5 17th.
'Personally, I think it was one of the best rounds I've shot all year,' said Oberholser, who is No. 1 on the money list. 'Considering the conditions, I'm very happy with the way I played. Growing up in the San Francisco area, if you wanted to play in the winter, you had to play in weather like this.'
Moore was only able to complete 14 holes. After starting with four straight pars, Moore rolled in a birdie putt at the fifth. He followed that up with a birdie at the par-3 seventh.
Moore, who won the Richmond Open and Lake Erie Charity Classic this year, continued his roll with a birdie at the 10th. However, he faltered with a bogey at the par-4 12th. He was able to recover that stroke with a birdie on 14 before play was halted.
Oberholser and Moore are two of the four men at this event looking for their third win of the season. Oberholser, Moore, Jason Gore and Cliff Kresge are the two-time winners on the Buy.Com Tour this season. If one of these four were to win this event, they would gain the automatic 'Battlefield' promotion to the PGA Tour.
Tag Ridings, Brian Claar, Gore, Jason Buha, Todd Barranger and Delsing, who fired a course-record 63 on Friday, are all tied at 4-under. Ridings and Claar completed their rounds, while Gore is even par for his round through 16 holes.
Barranger is one of many players looking for a big week that will secure their spot in the top-15. Barranger, currently 15th on the money list, is 2-over-par through 13 holes. The top-15 on the money list gain their PGA Tour card for the 2003 season.
Kresge struggled to a third round 7-over 79 and stands at plus-7 223 for the tournament.
Full-field scores from the Buy.Com Tour Championship