Graeme McDowell is up to seventh in the world rankings after his victory in the Volvo World Match Play Championship in Bulgaria on Sunday.The Northern Irishman defeated Thailand's Thongchai Jaidee in the final of the European Tour event for what was his second title win in his last three events.There was no change among the top six in the rankings, with Tiger Woods continuing to lead the way ahead of McDowell's compatriot Rory McIlroy.Latest leading positions in official world rankings:1. Tiger Woods (USA) 13.532. Rory McIlroy (NIR) 10.233. Adam Scott (AUS) 7.724. Justin Rose (ENG) 6.475. Brandt Snedeker (USA) 6.336. Luke Donald (ENG) 6.257. Graeme McDowell (NIR) 5.908. Louis Oosthuizen (RSA) 5.669. Phil Mickelson (USA) 5.2610. Steve Stricker (USA) 5.2211. Keegan Bradley (USA) 5.1512. Lee Westwood (ENG) 5.1213. Matt Kuchar (USA) 5.0814. Sergio Garcia (ESP) 4.9115. Charl Schwartzel (RSA) 4.9016. Webb Simpson 4.6817. Ian Poulter 4.6718. Bubba Watson 4.6419. Dustin Johnson 4.4120. Jason Dufner 4.26afpends ...