Martin Kaymer golfer in the world, making him only the second German (after Bernhard Langer) to be the top-ranked golfer in the world. At the time he was the second youngest to reach world number one behind Tiger Woods, soon surpassed by Rory McIlroy in March 2012, who gained the top ranking at age 22. In April, he relinquished his number one ranking after eight weeks to Westwood, who won the Indonesian Masters. After reaching the number one ranking, Kaymer decided to undergo a swing change to be able to move the ball both ways. Frustrated with his disappointing results at the
2013 Open Championship Norén (6), Geoff Ogilvy, Thorbjørn Olesen (5,6), Ian Poulter (5,6,17), Adam Scott (5,11,14), Vijay Singh, Brandt Snedeker (5,14,17) 5. The first 50 players on the Official World Golf Ranking for Week 21, 2013 Keegan Bradley (12,14,17), Tim Clark, Jason Day, Jamie Donaldson (6), Jason Dufner (14,17), Gonzalo Fernández-Castaño (6), Rickie Fowler (14), Jim Furyk (14,17), Sergio García (14,17), Robert Garrigus (14), Branden Grace (6,20), Bill Haas, Peter Hanson (6,17), Thongchai Jaidee (6), Martin Kaymer (6,12,17), David Lynn (6), Hunter Mahan (14), Matteo Manassero (6,7), Rory McIlroy (6,10,12,14,17), Phil Mickelson (9,11,14,17), Francesco Molinari (6,17), Ryan Moore (14), Carl Pettersson (14), Scott