Re: Danish Delight - Caroline Wozniacki thread - vol 6
The Ws/UEs differential tells you something about how a player was playing but it doesn't tell you everything. Did she force many errors from her opponent, did she have good depth on her groundstrokes so it was difficult for the other girl to attack, how well did she serve, etc. Those are things you can't tell from Ws/UEs, so sometimes it's still possible to play a good match despite a negative differential.
NB: Wawrinka had a -24 differential today but it was still the best match I've ever seen him play.
I don't want to speak for the original poster but I think what they meant was that Caroline typically does well when the ratio between winners/unforced errors are close. If the ratio is close to zero or positive she is much more likely to win than if it is greater than negative ten.
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