Barlow, a 30-year-old out of Henderson, Nev., sank a birdie putt on the final hole to capture the outright lead at The International presented by Qwest heading into Sunday.
For Barlow, who has made only five cuts on tour all year, his day started slowy with a birdie and a bogey through his first 12 holes. Then, as he was being passed on the leaderboard, he caught fire and reeled off birdies on five of his last six holes to get to 28 points and into first place.
'I'll be nervous, but it's something I can handle. I'm just going to play golf, try to be smart and be aggressive when I need to be,' said Barlow about playing on Sunday.
'The beauty of this format is you're going to have a bunch of guys firing low numbers and jumping up the leaderboard if they're making eagle. I have to think there's going to be a lot of guys shooting low (Sunday) if the weather holds up.'
As yesterday saw mother nature do most of the talking with extremely windy conditions, on Saturday the players had something to say, and they said it loud and clear.
Seven of the top-9 on the leaderboard were able to scored 11 points or better, with a resurgent Sergio Garcia leading the way with 19 points, one shy of the tournament record.
Of the nine, only Ernie Els and overnight leader Steve Lowery failed to get in on the high scores, but each had a respectable amount of points on the day. For Lowery, his 6 total was good enough to have him only one off the pace at 27.
Mark Brooks continued his hot ways, backing up yesterday's best 14 points with 11 more today, for a three day total 26, two back of Barlow.
Rich Beem, though shutout on Friday, rode the strength of six birdies and an eagle on his back nine, to stand only in fourth at 25.
Positioned six or seven points back are a trio that are no mystery when it comes to the international golf scene.
Garcia, who came into the weekend with a ho-hum 2 points, torched the front nine with seven birdies and an eagle and birdie on the backside that vaulted himself briefly into the clubhouse lead. He sits at 21.
'It was just a day where things were going my way,' Garcia said. 'I was hitting the ball great, and I finally got it going with the putter.'
Els garnered 6 points again on Saturday, to go with 6 on Friday and 8 on Thursday, for 20 overall, just eight behind and well within stricking distance. He won the title in 2000.
Also at 20, and perhaps the day's biggest suprise outside of Barlow, was Greg Norman.
Norman started his day with 4 points and made three birdies on the front side, then went on a tear, notching birdies on four of his next six holes and an eagle on the 17th worth 5 points. His 16 points were the second best point total of the day, tied with Steve Stricker, who also sits at 20.
Full-field scores from The International