Even as the clouds rolled in at the Houston Open in Humble, Stewart Cink started to see some light in his game.Cink saved par from the bunker on the 18th hole Saturday at Redstone Golf Club for a 4-under 68, giving him a share of the lead with Bill Haas going into the final round. Cink is winless in 75 starts since the British Open at Turnberry in 2009. This is his first time with at least a share of the third-round lead in nearly five years.And it doesn’t figure to be easy.One week after he shared the 36-hole lead at Bay Hill, Haas made seven birdies over his last 13 holes for a 67 and was tied with Cink at 11-under 205.Twenty players were within four shots of the lead, including Westlake’s Ben Crane, who is one shot back in a four-way tie for third. Only three of the 20 chasers — Dustin Johnson, Keegan Bradley and John Merrick — have won on the PGA Tour in the last year. And 12 of them can earn a trip to the Masters by winning.Phil Mickelson and Colleyville’s John Rollins sit five shots back in a 6-way tie at 6-under. Argyle’s Brandt Jobe is at 4-under.Briefly • PGA: Rory McIlroy made a last-minute decision to play in the Texas Open on the advice of his caddie, J.P. Fitzgerald. After McIlroy’s second round at the Houston Open, Fitzgerald suggested that McIlroy should consider playing in San Antonio next weekend to get in a few more competitive rounds before the Masters the following week. McIlroy mulled it over at lunch and told Fitzgerald that he thought it was a good idea. • European Tour: Marcel Siem of Germany shot a 3-under 69 to extend his lead to four shots after the third round of the Trophee Hassan II in Agadir, Morocco. The 72nd-ranked Siem needs to enter the top 50 by today to earn his first invitation to the Masters. Mikko Ilonen of Finland, Englishman David Horsey, and Pablo Larrazabal of Spain were all tied for second with 205. • Asian Tour: Thailand’s Prayad Marksaeng shot a 6-under 66 to take a five-stroke lead after the third round of the Asian Tour’s Chiangmai Classic. Prayad had an 18-under 198 total at Alpine Golf Resort in Chiangmai, Thailand. Thailand’s Thongchai Jaidee and Australia’s Matthew Stieger were tied for second while Ernie Els was eight strokes back after a 66.