Uhm..... It was a retirement. How can that be her biggest win ever?
Well, on paper at least this is the highest ranked player she has ever beat, so in that sense it is her biggest win ever.
Since none of us watched the match, it's difficult for us to say if this win was more about the retirement or about a high level of play from Julia.
Julia certainly seems to attribute the win in large part to the way she played.
She said today (from an Israeli sports news site): "I played really well, the first set was a very tight contest, and in the second my opponent had difficulties. I played my game from the start. I was aggressive and positive and I hope to continue this way in the final".
This has to be her biggest win ever. Has there been some spurt in talent improvement?
In recent weeks, and today as well, there's talk from her and her camp of a fundamental change she has been undergoing.
From today's interview with her coach: "Julia has been playing a more mature tennis for a while. She understands it's important to play her own kind of tennis and not to try to force things.
I have no doubt that this win and the results she's been having lately are a result of a long way Julia has gone since we began to work together. A way that includes investment and hard work on a daily basis. Julia proved to herself she can beat top players. Still, things should be viewed with the proper perspective and she should step by step try to improve from match to match."
from afar it does seem there's some change in attitude and maybe more, but as you wrote earlier, she has to be more consistent for this to be felt more.