PONTE VEDRA BEACH, FL, USA - The only two teenagers in the Top 40 duked it out in the quarterfinals of the MPS Group Championships on Friday night and for the third time in their three career meetings Caroline Wozniacki beat Anastasia Pavlyuchenkova in straight sets.

Wozniacki, the No.1 seed and defending champion at the $220,000 tournament, came out firing, breaking away with five straight games from 1-1 to take the first set, 6-1. Pavlyuchenkova, seeded No.5, burst out to a 3-0 lead in the second but Wozniacki went on another tear, taking six straight games for a 61 63 win.

"Anastasia was playing really well, especially in the beginning of the second set. She went for everything and it was all going in," Wozniacki said. "I just kept fighting for every point and it turned out well for me in the end."

Wozniacki had on both of her previous meetings with Pavlyuchenkova in straight sets as well, 61 64 at New Haven last summer and 62 62 at Miami this year.

At the beginning of this week, Sorana Cirstea was the third teen in the Top 40, but she turned 20 on Wednesday, leaving Wozniacki and Pavlyuchenkova.

Check out off-court pics from Ponte Vedra Beach right now!

Next up for Wozniacki will be No.4 seed Elena Vesnina, who crushed No.8 seed Melanie Oudin earlier in the day, 62 61. Vesnina did win one of her four previous meetings with Wozniacki, and came very close indeed to another one in last year's semifinals here, with four match points before falling in a third set tie-break. Check out Wozniacki and Vesnina's head-to-head here.

In the other semifinal, No.3 seed Dominika Cibulkova will take on Olga Govortsova. In the quarters, Cibulkova beat No.6 seed Aleksandra Wozniak, 75 61, while Govortsova beat lucky loser Varvara Lepchenko, 63 62. Cibulkova and Govortsova are playing each other for the very first time.