Casey Dellacqua has upset 2010 French Open champion Francesca Schiavone to reach the second round of the Madrid Open, while world No.7 Ana Ivanovic survived a scare.
Dellacqua dumped Schiavone out of the tournament with a 6-4 7-6 (7-5) win to kickstart her own French Open preparations.
Ivanovic fought back from a set down to also move into the second round on Sunday after Alexandra Dulgheru retired when trailing 4-0 in the decider.
The Romanian wildcard shocked Eugenie Bouchard on Fed Cup duty last month and looked on course to produce another upset as she eased through the first set 6-2 and then broke the Serbian to serve for the match at 6-5 in the second.
However, Ivanovic broke straight back and then romped through the tie-break 7-1 to force a deciding set.
Dulgheru withdrew after Ivanovic took a commanding 4-0 lead in the third set.
Eighth seed Ekaterina Makarova was a high-profile exit, though, as she was routed by fellow Russian Svetlana Kuvenetsova 6-2 6-1.