That rumbling sound coming from Lanikai yesterday was no cause for alarm ... if your name was Dean Wilson. Everyone else in the 52nd Mid-Pacific Open field has good reason for concern.

Wilson shook the earth with another 3-under 69 that gave him a one-stroke lead over Sam Cyr entering today's final round. After a shaky start, the PGA Tour veteran crushed his final 10 holes, going 5 under over that span to carry solid momentum with his three-day total of 3-under 213.

Cyr, a 23-year-old King Kekaulike graduate playing in his first Mid-Pac, shot an even-par 72 and led Wilson until the Castle High alum sank a 40-foot eagle putt from the fringe on the treacherous 525-yard No. 5 hole. Wilson's birdies on Nos. 18, 2, 3 and 6 mitigated three bogeys, including two early on that put him three strokes behind Cyr.

“;It's nice to roll some putts in,”; Wilson said. “;This course is just tough. You get it in the wrong places with the wind, and the greens are so hard and so fast that you can hit a shot that you think's good, and exactly how you want to play it. But sometimes it doesn't take the right bounce 'cause the green's too difficult to judge.”;

Most others who played in the dry, occasionally windy conditions yesterday would agree. Nathan Lashley is the only other player in the red, after a 70 put him at 1-under 215. Wilson, Cyr and Lashley tee off last at 9 a.m. today.

Cyr, who finished his college career last year at NAIA school Point Loma Nazarene in San Diego, is enjoying himself after three stable rounds of 70, 72 and 72. He just wished his putter came alive for an attempt longer than 5 feet yesterday. He had two birdies and two bogeys.

“;For sure, I give myself a chance to win, and that's the goal,”; said Cyr, who flew in from San Diego for this event. “;That's the whole object of the game, to give yourself a chance at the last day. And I have a chance, and it's been fun. I've played solid for the most part.”;

Leilehua grad Nick Mason started the day tied with Cyr for the lead, but a spate of three straight bogeys on his first nine and a water-hazard-induced bogey on 5 dislodged him from today's leader's group.

There was plenty of drama anyway, as Wilson overtook Cyr but couldn't put away the youth. A mutual respect is budding between Wilson, the seasoned pro, and Cyr, the upbeat, wiry Maui native who routinely outdrove his elder playing partners.

“;He's way older than me,”; Cyr said of Wilson, 40, with a laugh. “;He's got more runs at this thing than I do, but it's good, he played well today. I'm expecting it to be fun, I'm expecting it to be a battle.”;

Wilson nodded his respect at Cyr after their round.

“;He played fantastic, nice and solid. Didn't make too many mistakes, and just parred along,”; Wilson said. “;That's the way you need to play when you're in this course, for sure.”;

For a man who must now wait for spare PGA openings, it would be rewarding to leave home with some hardware and the $14,000 winner's check. Wilson's last tournament victory came at the 2007 Hawaii State Open.

“;Long time, so it'd be nice to get a trophy again,”; he said.