hingis was a great player but the depth of womens tennis has gotten better since she lost her top spot and retired. which makes it harder to hold on to that number 1 position. i think we also have to consider injuries. i cant really remember but serena was number 1 and got injured and kim took over and she got injured and justine took over and is now injured so the number 1's have been effected by injuries a bit and certainly the rankings have eg mauresmo getting to number 1 this year is mainly due to injuries of other top players rather than her results.
Go the aussies! stosur!!!
and good luck russians: dementieva, safina, kirilenko, sharapova, kuznetsova, bovina, zvonareva, dushevina.
also good luck to: azarenka, lucic, sprem, vakulenko, vaidisova, safarova, ivanovic, groenefeld, mirza, krajicek, kvitkova, larcher de brito, lisicki.