Tatjana Maria #70GermanyvsFiona Ferro #99France

Maria's serve has been the steady part of that run, with 3.7 aces against 2.9 double faults per match over the same 15 matches.

She has won 71.8% of first-serve points on 563 first serves and saved 59.6% of break points (53 of 89) in the window. The sample runs through her Querétaro quarterfinal, so it covers the clay stretch she is on now. The detail is thin in one respect: winners and unforced errors are recorded for only two of those matches, leaving the serve and return splits to carry most of the picture.

It is the clearest counterweight to Ferro's 12-2 record across 14 tracked matches, and it came against a player ranked below her. She has won on clay since, including a 7-5, 1-6, 6-3 three-setter against Sofia Johnson on 27 October, so the defeat has not been followed by a slide. One scoreline is a single data point rather than a trend, and no serve or return splits are available for Ferro.

Maria’s win is her immediate result before this semifinal. The opening set reached a tie-break, while she still completed the match in straight sets. Strakhova entered as a qualifier, so this result provides limited direct comparison with Ferro.