Caroline Wozniacki had a very bad day today in Cincinnati, winning only a third of her first serve points against Elena Dementieva. 8th-seeded Wozniacki won only one game on her serve in a match number 4 seed Dementieva easily won, 6-2, 6-1.
Sybille Bammer had even worse success with her second serve, winning only 18%. The first set of her quarterfinal match against Jelena Jankovic sent Bammer back to the snack bar--this time, for some cream cheese. It took Jankovic just over an hour to win, 6-0, 6-3.
5th-seeded Jankovic will play Dementieva in the semifinals. Jankovic has a 6-3 record against Dementieva, and 5-2 record against her on hard courts.
The other semifinal match will feature world number 1 Dinara Safina and 14th seed Flavia Pennetta. Safina is 6-0 against Pennetta in tour matches.