Hlavackova and Mirnyi, the No. 7 seeds, completing three breaks to win 7-6 (7-5), 6-3. They had a pair of breaks in the second set when they won half of the points off the serves of Spears and Gonzalez, who were unseeded.
Hlavackova and Mirnyi dropped only one set in completing their five-match run in the tournament.
Spears reached her first major tournament final and Gonzalez his third in mixed doubles with upsets of the Nos. 5 and 8 seeded teams.
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