Anna Kalinskaya and Daria Kasatkina meet in the round of 32 at Washington on Tuesday. Anna Kalinskaya has won 7 of the last 10. Daria Kasatkina comes in at 6 wins from the last ten.
Daria Kasatkina has had the better of this rivalry, winning 3 of 4 against Anna Kalinskaya. On hard specifically it reads 2-1 Kasatkina — worth more than the overall number this week.
The serve is where this match separates: Kalinskaya has been winning 62.9% of first-serve points to Kasatkina's 59%, and on hard that gap compounds fast. Expect resistance, but the match-level math tilts clearly toward Kalinskaya.