World number two Dinara Safina and seventh-ranked Ana Ivanovic have suffered shock defeats in the Sony Ericsson Open third round in Miami.
Russian Safina lost 6-1 6-4 to Australian 42nd ranked Samantha Stosur after rain stopped play with her trailing 5-4 in the second set.
Hungarian Agnes Szavay, ranked 25th, beat Ivanovic 6-4 4-6 6-1 in another rain-affected match.
Ivanovic's exit completed a bad weekend for Serbia after Jelena Jankovic was knocked out in the second round by Argentine Gisela Dulko.
In the men's event, American Andy Roddick survived a gruelling first set tiebreak against Russian Dmitry Tursunov, which he won 11-9, before going on to ease through the second set 6-2.