Alisa Kleybanova upset defending champion Jelena Jankovic 6-4, 6-3 Friday to advance to the semifinals of the Kremlin Cup.
The upset came a day after the second-seeded Jelena Jankovic took the last spot for the season-ending WTA Championships in Doha, Qatar.
J.J. dropped serve in the fifth game of each set. Down 5-3 in the second set, Jankovic double-faulted twice to lose the match.
Jelena Jankovic, is a Serbian professional tennis player former World No. 1
Alisa Mikhaelovna Kleybanova, 20, is a Russian professional tennis player. Her highest WTA world ranking to date is No. 23, achieved on May 18, 2009.
Eighth-seeded Francesca Schiavone of Italy advanced with a 6-3, 6-2 win over Maria Kirilenko.
Schiavone, the 2005 runner-up, will play Alona Bondarenko, who ousted qualifier Tsvetana Pironkova 6-3, 6-3.
In the men's tournament, sixth-seeded Janko Tipsarevic advanced to his first semifinal this season by defeating Robby Ginepri of the United States, 6-3, 6-3.
The Associated Press has contributed to the report.