The 14 times major winner Tiger Woods has fallen out of golf's top 20 rankings for the first time since January 1997.
The former world number one has not played since May because of knee and achilles tendon injuries although he is expected to announce later this week that he will return to action at the WGC-Bridgestone Invitational late next week.
That would test his fitness ahead of the year's final major, the USPGA Championship in Atlanta, which starts on August the 11th.
Woods has dropped from eighth to 21st in the rankings in that time and, last week announced that he had fired his longtime caddie, New Zealander Steve Williams.
Englishmen Luke Donald and Lee Westwood retain the number one and two rankings respectively with Germany's US PGA Championship winner Martin Kaymer in third and Northern Ireland's Masters champion Rory McIlroy in fourth.
Jason Day is the top-ranked Australian at number eight while Adam Scott is listed at number 17.
