American duo Stewart Cink and Bill Haas grabbed a share of the lead heading into the last round at the Houston Open on Saturday. Cink carded a round of 68, while Haas posted a 67 as the pair moved one stroke clear at the top of the leaderboard on 11-under at the Redstone Golf Club. Cink, looking to win his first PGA Tour title since claiming the 2009 British Open, hit five birdies and just one bogey across his 18 holes. Haas, meanwhile, bogeyed his third hole of the day before going on to sink seven birdies in his best performance of the tournament thus far. American&aposs Ben Crane (67), D.A. Points (71), Steve Wheatcroft (72) and Jason Kokrak (71) are a shot off the pace at 10-under. Bud Cauley birdied four of his opening six holes as he shot a seven-under 65 in the penultimate round to move within two strokes of the lead. He is joined by Louis Oosthuizen (65), Lee Westwood (67), Billy Horschel (67), Keegan Bradley (67), Kevin Chappell (67), Henrik Stenson (68), Angel Cabrera (69) and Cameron Tringale (69) on nine-under. Englishman Brian Davis is in sole possession of 16th position at eight-under following his one-under 71. Greg Owen (68), John Merrick (69), Charley Hoffman (70) and Dustin Johnson (70) are four shots behind the two leaders heading into Sunday&aposs final round. World number two Rory McIlroy, who has the chance to reclaim the top spot from Tiger Woods if he wins this tournament, fell further off the pace and is nine shots in arrears following his round of 71.