It took a two way play-off to decide the winner of the Wells Fargo Championship. The only real surprise was that Phil Mickelson was not involved. Derek Ernst won the title, beating David Lynn at the first extra hole. Derek Ernst / Getty Images Six days ago Derek Ernst received a phone call telling him he was in the field of the Wells Fargo Championship. The Rookie has made the most of that opportunity by winning the event. Derek and David finished the tournament at -8 under par, Derek made it courtesy of a super six iron shot on the last hole of regulation, to with-in four feet of the pin, that set up the then converted birdie opportunity. It was one of only four birdies on the hole all day. Phil Mickelson needed a birdie there to get into the play-off, and didn't make it. Derek said the week had been unbelievable, especially that last approach shot in regulation; "I was trying to hit it as close as I possibly could. This feeling is unbelievable right now." David Lynn said he had never heard of Derek previously, but was full of praise for the way the rookie played; "I've never heard of him, he's a nice player. He said he was 180th on the FedExCup list when we were chatting on the way around. He played super. I mean, he could have won it quite easily in regular play. He played the finish really solid, and then he hit two really solid shots in the playoff. So every credit to him. Well done. I've not been particularly driving it well, so took that tee shot down in the playoff and obviously found a bit of a crooked spot and then didn't play a great bunker shot either." Phil Mickelson finished in third position, one shot out of the play-off which he should at least have been in. Phil had a one shot lead heading into the Green Mile, the last three holes. Bogey at 16 and 17 meant he needed that birdie on the last. "I felt like I was in control, and I let it slip away there the last few holes, so it was disappointing. I'm pretty bummed out, I thought that this was one I had in control. If I could have gotten that bunker shot up-and-down on 15, I would have had a two-shot lead heading into those last three holes, which I know are difficult holes, so it would have been nice to have that. There is just no excuse," it wasn't easy, but it wasn't anything out of the ordinary or difficult. I should have made par." Lee Westwood and Robert Karlsson finished tied in fourth place, both of these players could also have won this tournament, apart from crumbling over the Green Mile.