S. Sierra shows a 4–1 form record, though the level of opposition has been mixed — average ranking of opponents is 80. Point margins have been modest — DS averaging +7.9. Wins have been functional rather than dominant. The serve has been a concern — averaging only 5.7/10, leaving S. Sierra vulnerable on second serve and facing frequent return pressure. Good performance in key moments — break point efficiency of +13 over the last five.

D. Yastremska shows a 4–1 form record, though the level of opposition has been mixed — average ranking of opponents is 54. Form is mixed — DS ranging from -8.0 to 14.8, with at least one match where D. Yastremska was clearly outplayed. The serve has been a concern — averaging only 5.9/10, leaving D. Yastremska vulnerable on second serve and facing frequent return pressure. Break point efficiency is a red flag — D. Yastremska has been losing the important points, with a BP efficiency of -11 over recent matches.