A last-hole double bogey from Michael Letzig handed control of the Buick Open to Tiger Woods in Michigan. World No.1 and two-time Buick Open winner Woods began the day in a tie for fifth place, four shots behind Australia&aposs John Senden, whose second-round 66 had left him topping the halfway leaderboard at 14-under par, two shots clear of American Letzig at the 7,127-yard par-72 Warwick Hills Golf and Country Club in Grand Blanc. A 71 from Senden allowed Letzig to take charge before a poor greenside bunker shot at 18 led to a six on the par-four closing hole for a third-round 68, leaving Woods, who had earlier completed a seven-under 65, with a one-shot lead heading into the final round. Woods, who rebounded from an opening 71 with a 63 on Friday, will start the fourth round at 17-under par, one clear of Letzig, with Senden at 15-under. Americans Matt Bettencourt and Vaughn Taylor were tied for fourth at 14-under while compatriots Charles Warren and Jimmy Walker held a share of sixth place with Australian Greg Chalmers at 13-under. Woods had started strongly with birdies at the second, third and fourth holes before a bogey slowed his progress at the par-three eighth as he went out in 33. Although four birdies on his inward nine of 32 represented a better return, the world No.1 said he was happier with his front nine. “Today was a scoring day,” Woods said. “I hit it good on the front nine, on the back nine I hit some loose shots and was just scrambling and trying to keep pace because those guys were just making birdies everywhere.” Two of Woods&apos birdies at the par-five 13th and 16th holes typified the scrambling effort following errant tee shots, while his par on the par-four 18th was achieved despite bunkering an approach shot from the tree-lined 10th fairway. “Well, you&aposre not supposed to be doing that,” he added. “You know, this golf course is pretty short. So you have to take advantage of the holes, and I did that, but unfortunately I didn&apost do it the correct way.” He joked: “It was on the fairway – someone else&aposs fairway – twice on the back nine. So it was an interesting back nine, but I came out well.” Australian Marc Leishman is in a seven-way tie at 12-under with Scott Piercy shooting the low round of the day, a 64, while Ben Crane and Woody Austin got there posting 65s and Bob Heintz a 66. Meanwhile, Steve Webster will take a one-shot lead into the final round of the Czech Open after shooting a three-under-par 69 in his third round. Matthew Millar is the leading Australian eight shots off the pace. Buick Open Round 3 -17: Tiger Woods 71 63 65 -16: Michael Letzig 67 65 68 -15: John Senden (Australia) 64 66 71 -14: Matt Bettencourt 70 67 65, Vaughn Taylor 65 68 69 -13: Greg Chalmers (Australia) 66 68 69, Jimmy Walker 70 64 69 -12: Scott Piercy 70 70 64, Woody Austin 68 71 65, Ben Crane 68 71 65, Bob Heintz 70 68 66, Marc Leishman (Australia) 67 69 68, Bill Lunde 68 65 71 -11: Bill Haas 68 68 69, Billy Mayfair 68 68 69, Jeff Klauk 66 70 69, Y E Yang 65 69 71 Also: -10: James Nitties (Australia) 65 70 71 -9: Matt Jones (Australia) 68 68 71 -8: Mark Hensby (Australia) 68 72 68, Jason Day (Australia) 74 66 68 -6: Nathan Green (Australia) 69 70 71, Stuart Appleby (Australia) 69 67 74 -5: Aron Price (Australia) 69 68 74 3rd Round of the Czech Open -11: Steve Webster 66 70 69 -10: Ignacio Garrido 67 70 69, Graeme Storm 68 68 70 -9: Sam Little 70 67 70, Gareth Maybin 73 66 68 -8: Robert-Jan Derksen 67 70 71, Oskar Henningsson 70 71 67 -7: John Bickerton 66 71 72, Richie Ramsay 71 68 70 -6: Francois Delamontagne 67 72 71, Tano Goya 65 75 70, Michael Hoey 71 71 68, Fabrizio Zanotti 68 71 71 -5: Markus Brier 70 73 68, Robert Dinwiddie 71 70 70, David Drysdale 72 72 67, Simon Dyson 76 66 69, Martin Erlandsson 71 74 66, Miguel Angel Jimenez 71 71 69, Jose Manuel Lara 68 70 73, Santiago Luna 70 69 72, Callum Macaulay 68 72 71 Also: -3: Matthew Millar 70 70 73 +4: Brett Rumford (Australia) 74 71 75, Kane Webber (Australia) 71 74 75