AP Golf Writer
SHANGHAI (AP) -- Luke Guthrie brought only one 2-liter bottle of Mountain Dew from America, enough of a caffeine fix to get him through the week without headaches. He packed only one sweater -- lime green -- because his crash course on Shanghai did not include checking the forecast.
At this rate, Guthrie might end up staying another week, a problem he would love to have.
Guthrie coped with another day of harsh wind and plunging temperatures Friday with a 1-under 71, giving the 23-year-old American a four-shot lead over six players going into the weekend at the BMW Masters.
A victory would make him eligible for his first World Golf Championship next week across town in the HSBC Champions.
"I was just coming over to challenge myself, put myself in a new environment and see what I could make of it," Guthrie said. "I'm playing well right now. I've got 36 more holes and I'm looking forward to the opportunity and hopefully I come out with a 'W' and get to stay in Shanghai longer."
Guthrie never let anyone get closer than two shots at Lake Malaren, and he started to pull away with a 20-foot birdie putt that broke three directions on the par-3 17th. But his misjudged the speed of the 18th green on a long chip, and then narrowly missed a 10-foot par putt on his last hole.
It was a tough way to end a solid day, though he had no complaints at 8-under 136 and four shots clear of the field.
Even as everyone else was battling par and conditions that were getting colder by the minute, Guthrie marched along in short sleeves. That wasn't by choice.
"I should have looked that up about Shanghai before I came here," Guthrie said. "I didn't know exactly what the weather was going to be like. I only have one sweater here. I'm wearing blue and pink today, so I'm kind of out there already. I didn't want to put a green sweater on top of it. So I just dealt with being a little cold."
Ricardo Gonzalez didn't make a bogey until the final hole and still had a 67, the lowest round of the day. Also in a tie for second were Scott Jamieson (68), Paul Casey, Thongchai Jaidee and Craig Lee, who each shot 70.
Simon Dyson, also tied for second Friday, was disqualified for a rules violation that was discovered Saturday morning.
In the second round, he marked his ball just beyond the cup on No. 8. As he marked it, Dyson made a quick move to tamp down a spot on the green directly in his line. That violates Rule 16-1a.
The infraction was pointed out to European Tour rules officials, who spoke to Dyson. Because he did not add the two-shot penalty, he was disqualified for signing an incorrect scorecard.
The disqualification was a big blow to the Englishman. He was No. 66 on the money list. Only the top 60 are eligible for the final event in Dubai.
John Daly showed plenty of power but couldn't make a putt in his round of 74, which included a double bogey-birdie-bogey finish. He was six shots behind.
Peter Uihlein, who was two shots behind after chipping in for eagle at No. 7, made six bogeys over his next seven holes. He tried to salvage his round with two later birdies, only to catch a mound short of the 18th that sent his approach into the bunker for one last bogey and a 75. He was at 144.
As for Guthrie, not everything that happens in Las Vegas stays there -- such as his game. He closed with a 64 in Las Vegas to tie for fifth and then flew straight to Shanghai, leaving him enough time to get over jet lag and see the Jack Nicklaus design at Lake Malaren in the pro-am.
Even if he didn't bring enough warm clothes, he brought his game.
"I'm playing well. I was in good form coming here and had been hitting it really well," Guthrie said. "Kind of felt the trend going in the right direction."
Guthrie made his first bogey of the tournament with a tee shot that left him against the lip of a fairway bunker on No. 5, and he had to knock it out to the fairway. He dropped another shot on the 10th, and hit a poor shot that left him in an impossible spot on the 12th. Everything else, however, was solid. He rolled in a 15-foot birdie on the 11th, got up-and-down behind the green on the par-5 15th for a birdie and hit 6-iron into 20 feet on the 17th.