I think you'll find both Williams sisters were knocked out *before* I posted. A similar thing happened only a couple of weeks ago at their last tournament - they were both knocked out in about the third round. (this time 'round one *cough* slipped took a dive on wet grass)
That totally explains why I did not find (I in fact did not even know both were in until I read one had retired the day before) when I was looking at day before outrights Venus was EXACTLY the same odds as Barty (6.75) so I took one on both,,, did not even know she had her game earlier than Barty. You cannot believe how badly tennis is covered in my country unless you read the English newspapers:) At least Barty went through easily, but now am looking for outrights again.