Hamburg - American Serena Williams remains top of an unchanged women's tennis rankings issued Monday by the WTA ruling body.

Williams leads the rankings with 9,982 points followed by Russia's Dinara Safina on 9,021.

Sister Venus Williams, who won the WTA tournament in Acapulo on the weekend, beating Italy's Flavia Pennetta 6-1, 6-2 in the final, remains fifth.

WTA top 10 as of March 2 (previous ranking in parenthesis):

"#" 1. (1) Serena Williams, US, 9,982 2. (2) Dinara Safina, Russia, 9,021 3. (3) Jelena Jankovic, Serbia, 8,400 4. (4) Elena Dementieva, Russia, 7,886 5. (5) Venus Williams, US, 7,092 6. (6) Vera Zvonareva, Russia, 6,320 7. (7) Ana Ivanovic, Serbia, 5,414 8. (8) Svetlana Kuznetsova, Russia, 4,953 9. (9) Nadia Petrova, Russia, 3,882 10.(10) Agnieszka Radwanska, Poland, 3,448 "#" (dpa)