Sania Mirza and her American partner Bethanie Mattek crashed out of the USD 600,000 East West Bank Classic doubles event following a straight set quarterfinal loss to second seeds Rennae Stubbs and Kveta Peschke in Los Angeles.
Sania and Mattek went down 6-7 (2) 4-6 to the Australian-Czech duo in a match that lasted close to one and a half hours.
The opening set was a tightly contested affair with both pairs breaking each other three times each but Stubbs and Peschke landed more winners, besides having a better first serve percentage, to go 1-0 set up after clinching the tie-breaker.
Sania and Mattek failed to recover from the setback and wasted five break points in the second set as their opponents wrapped up the match in their favour.
Stubbs and Peschke will now face the fourth seeded combination of Russian Maria Kirilenko and Gisela Dulko of Argentina in the last four.
Sania has already bowed out of the singles, losing in the pre-quarterfinals and Friday's doubles defeat ended her campaign at the hardcourt event.