Hamburg, Sep 21 (DPA) Dinara Safina stayed ahead of the Williams sisters Serena and Venus in the WTA tennis rankings released Monday.

The Russian Safina has 8,340 points, with Serena Williams on 7,807 and sister Venus on 6,645.

US Open finalist Caroline Wozniacki of Denmark continued to move up the rankings, improving to a career-best fifth, one behind Elena Dementieva of Russia who gained a place to fourth.

Fellow Russian Svetlana Kuznetsova slipped two places to sixth, while the remaining positions in the leading 10 remained unchanged.

Top-10

1.Dinara Safina, Russia, 8,340 points

2.