A spot in the next round is at stake on Wednesday, when Marta Kostyuk goes up against Mirra Andreeva in the Cincinnati round of 16. Marta Kostyuk comes in at 8 wins from the last ten. Mirra Andreeva comes in at 7 wins from the last ten.

Marta Kostyuk has had the better of this rivalry, winning 2 of 3 against Mirra Andreeva. On hard specifically it reads 1-0 Kostyuk — worth more than the overall number this week.

Neither the serve numbers nor the ratings separate these two by much, which is why our number stays close to even. A tiebreak or two would surprise nobody, with Kostyuk fractionally more likely to land the big points.