PALM BEACH GARDENS, Fla. Rory McIlroy left before his round was even over. Tiger Woods had to rally just to stick around.
And with all that drama Friday in the Honda Classic, Luke Guthrie showed off his potential with a 7-under-par 63 to take a one-shot lead going into the weekend at PGA National.
Guthrie, pegged by many of his peers as a rookie worth watching going into the year, played bogey-free on another cool, cloudy day.
Of his seven birdies, perhaps the most impressive for the Big Ten champion from Illinois came on the sixth hole, when he had mud on the side of his ball and was able to work the shot in from the right to about 10 feet.
After finishing his round, he walked into an interview room when someone mentioned that McIlroy walked off the course after being 7 over par through eight holes.
"I had no clue," Guthrie said. "I was just kind of going about my business out there."
He was at 9-under 131 and had a one-shot lead over Michael Thompson.
McIlroy, who missed the cut in Abu Dhabi and lost in the first round of the Match Play Championship in his previous two starts, made a double bogey on his second hole and rinsed two balls on the 16th hole for a triple bogey.
He hit his approach to the 18th into the water and never finished the hole. McIlroy shook hands with Ernie Els and Mark Wilson and was on his way, but not before sending conflicting messages.
McIlroy told three reporters who followed him to his car that it was nothing physical but that he was "not in a good place mentally."
An hour later, he released a statement through his management company that he couldn't concentrate because of a sore wisdom tooth.
Woods looked as if he might join McIlroy. After mixing birdies with bogeys, Woods went bunker to bunker, over the green, short of the green and wound up with a double bogey on the 13th hole to fall one shot under the cut line with five holes to play.
Woods answered with a shot to five feet for a birdie, a six-foot par putt on the 16th hole, a par save from the back bunker on the 17th that was easier than it looked, and a par save from near the grandstand by the 18th green that was harder than it looked.
He wound up with another 70 to make the cut on the number, nine shots out of the lead.
Also having a tough time was tennis star Serena Williams, following in Woods' large gallery. She took a picture of Woods after his tee shot on the 17th and was scolded by security. The PGA Tour does not allow photos on competition days.
"Apparently u can't take pics. This security yelled at me," she tweeted.
Williams posted the photo a few minutes later, and she finished with one last tweet: "In my Defense peeps always take pics of tennis players."
There was no reason to get a snapshot of Camilo Villegas, who joined a dubious list of players who went from first to worst. Villegas, playing primarily on sponsor exemptions because he lost his full tour status, opened with a 64 for his best start in more than a year.
The Colombian was 13 shots worse Friday with a 77 that caused him to miss the cut. The last player to do that was Jim Renner at the Travelers Championship in 2011.
LPGA Tour in Singapore Stacy Lewis made six birdies to shoot a 6-under 66 and take a two-stroke lead after the second round of the HSBC Women's Champions.
Lewis, the reigning LPGA Player of the Year, was at 11-under 133 at Sentosa Golf Club.