Tiger Woods\' tumble down the world rankings continued this week as he slipped to eighth place behind England\'s Paul Casey who moved up one. The American lost his top golfer status to another Englishman, Lee Westwood on October 31 and, with his long winless streak extending, he has gradually slipped further down the table. Out of action since picking up a knee injury while playing in the Masters in early April, Woods is set to return to action this week at the Players Championship in Florida and then will concentrate on the US Open in June. Europe now has six of the top seven players in the world, with only Phil Mickelson in fourth spot breaking their stranglehold. Latest leading positions in the world golf rankings: 1. Lee Westwood (ENG) 8.07pts 2. Martin Kaymer (GER) 7.42 3. Luke Donald (ENG) 7.33 4. Phil Mickelson (USA) 6.59 5. Graeme McDowell (NIR) 5.65 6. Rory McIlroy (NIR) 5.44 7. Paul Casey (ENG) 5.39 8. Tiger Woods (USA) 5.36 9. Steve Stricker (USA) 5.33 10. Matt Kuchar (USA) 5.26.