Jelena Jankovic will regain the Sony Ericsson WTA Tour No. 1 ranking when the latest rankings are released on Monday.
Serena Williams lost the top spot on Wednesday after being beaten by Na Li in the second round of the Porsche Tennis Grand Prix.
Williams, the 2008 US Open champion, was upset by Li in three sets 0-6, 6-1, 6-4.
Jankovic has won more matches than any other player on Tour this year, compiling a 55-16 record in her first 18 tournaments of 2008. She has already secured a spot in the singles competition at the season-ending Sony Ericsson Championships – Doha 2008 and currently holds the top spot in the Race to the Championships.
Over the course of 2008, Jankovic has won the Tier I 2008 Internazionali BNL d’Italia in Rome and just last week, captured the China Open in Beijing.
Since Justine Henin retired on May 14, 2008 and immediately took her name off the rankings, four players have held the No.1 ranking: Ana Ivanovic (12 weeks), Jankovic (two weeks as of October 6), Maria Sharapova (three weeks) and Serena Williams (four weeks).




Wow,
What a rude-Li shock !