Simplify the following text for a Grade 4 native English-speaking person.
Original: At Osaka , Mirza won her first round match against 5th seed Shahar Pe ` er 3 â `` 6 , 6 â `` 3 , 6 â `` 4 . Mirza then defeated Viktoriya Kutuzova 6 â `` 4 , 6 â `` 3 and in the quarterfinal she defeated 2nd seed Marion Bartoli 6 â `` 4 , 2 â `` 0 by retirement .
Simplified: Sun Tiantian and Nenad ZimonjiÄ ) won the final 7 â `` 6 ( 4 ) , 6 â `` 4 .