Samantha Stosur offered no excuses after adding to her dismal Wimbledon record with a shocking first-round loss to Estonian qualifier Kaia Kanepi.
"I just didn't play as well as I know that I can today," the French Open runner-up said after the 6-4 6-4 loss on Tuesday.
"But I thought she played well. She served very well. I didn't serve as well as her and I think that kind of hurt me.
"It has been definitely a long few months through Europe, but that's all part and parcel with doing well.
"Yeah, I'm no doubt disappointed. Not really any other way to say it, really. I wanted to do a lot better here than what I had in previous years. I didn't. "So it's unfortunate, but I'll come back next year and try even harder."
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Stosur's defeat preceded a straight-sets loss also for fellow Australian Casey Dellacqua and overshadowed Anastasia Rodionova's fighting three-set victory over plucky Brit Anne Keothavong.
Stosur, the world No.6 and winner of a tour-best 35 matches in 2010, never got hot, going down in one hour, 22 minutes on Showcourt 18.
Kanepi - a quality opponent who peaked at world No.18 in May of last year before being struck down by injury - played well enough but ultimately cashed in against a seriously out-of-sorts Stosur.
The Australian lost her very first service game of the match and was unable to work her way back into the opening set, despite having four break-back opportunities.
The sixth seed also dropped serve in the first game of the second set, but this time broke straight back for 1-1 with a deft backhand drop shot. But serving at 3-3 and 30-15, Stosur made two bad blunders, netting an easy overhead and then pushing a forehand wide, to gift Kanepi another break point.
The Estonian promptly belted a forehand winner to forge ahead and hold for 5-3. Stosur gallantly fought off three match points on her own serve the next game, but it merely proved a stay of execution as nervously Kanepi closed out the contest.
The win was just Kanepi's second-ever at Wimbledon. While grass is Stosur's least-preferred surface, hopes were nevertheless high that the 26-year-old would capitalise on an inviting draw to make a decent run at the title.
Alas, the Queenslander capitulated on day two of the championships, the first-round howler leaving her with an unflattering 5-8 win-loss record at the All England Club.
Rodionova earlier gave Australia five players in the second round with a stirring 3-6 6-2 6-4 win that set up a clash on Thursday with former Russian countrywoman and 19th seed Svetlana Kuznetsova.
An underdone Dellacqua, playing her first match since suffering stress fractures in her right foot in March, lost 6-1 6-0 to Serbian Bojana Jovanovski.
