Luke Donald
56 weeks
Donald finished the 2011 season with the No. 1 ranking. Much of his success came on the European Tour. He became No. 1 in May 2011 after defeating Lee Westwood in a playoff to win the BMW PGA Championship.
Sports blog information from USA TODAY.
The Official World Golf Ranking was introduced in 1986. Since its introduction, 21 different players have been ranked No. 1 in the world.
Donald finished the 2011 season with the No. 1 ranking. Much of his success came on the European Tour. He became No. 1 in May 2011 after defeating Lee Westwood in a playoff to win the BMW PGA Championship.