Australian Jason Day survived a final hole bogey to win the Byron Nelson Championship Sunday. Day carded a 72 to finish on 10-under-par 270 at the Four Seasons TPC, two strokes ahead of Americans Blake Adams, Brian Gay and Jeff Overton. The 22-year-old Day was helped by Adams, who double-bogeyed the last after his second shot clipped a tree branch and ended in a water hazard. “I wear my heart on my collar and I worked so hard to get to where I am today and this means a lot to me,” Day told reporters after becoming the youngest Australian to win on the PGA Tour. Day seemed headed for a playoff when he pulled his four-iron approach shot into the water at the par-four 18th but got a huge reprieve when Adams also found the water when his second shot clipped a branch. “I was disappointed that I hit it in the water and made it so hard on myself, but in the end I'm happy,” said Day, the 2006 Australian amateur champion. Day's first win took him longer than he expected but he said he had learned a lot. Day began the final round two strokes clear of Adams but slipped out of the lead after carding three bogeys in four holes just before the turn. However, he birdied the 11th and 12th to regain a two-shot advantage and came to the last with a one-shot cushion. Adams blamed a poor tee shot for his costly double-bogey. Khan misses out on US Open Exhausted Simon Khan missed out on US Open qualification Monday just 24 hours after winning the PGA Championship. European Ryder Cup captain Colin Montgomerie, Northern Ireland's Darren Clarke and Italian rookie Matteo Manassero were also among those who missed out on a spot for the major starting on June 17 at Pebble Beach. Clarke was so disappointed with his form he said he had withdrawn from this week's Madrid Masters. Khan, who became the first invited player to win the European Tour's flagship event at Wentworth Sunday, was one of six players to finish seven under par in the 36-hole event, forcing a playoff for the five remaining qualifying spots. His rivals all birdied the opening playoff hole but the 37-year-old Briton missed from 15 feet for a par. British rookie James Morrison finished top at Walton Heath.