PERTH, Australia -- Bernard Tomic upset top-ranked Novak Djokovic 6-4, 6-4 but Australia lost to Serbia 2-1 at the Hopman Cup on Wednesday. Ana Ivanovic evened the round-robin event by overwhelming Australian 16-year-old Ashleigh Barty 6-2, 6-3. Barty made a positive start, but once Ivanovic made the first break to lead 4-2 she took control. The Serbians combined to win the mixed doubles 6-4, 6-7 (8), 10-6...
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