BIRMINGHAM, England, June 13 (UPI) -- Bethanie Mattek and Marina Erakovic were upset winners Friday in quarterfinal play at the $200,000 DFS Classic tennis tournament in England.
The upsets left 12th-seeded Kateryna Bondarenko the only seeded player to advance to the DFS semifinals. None of the four women in Saturday's semis have won a WTA event.