A spot in the next round is at stake on Wednesday, when Coco Gauff goes up against Marie Bouzkova in the Cincinnati round of 16. Coco Gauff has won 8 of the last 10. Marie Bouzkova comes in at 7 wins from the last ten.
The serve is where this match separates: Gauff has been winning 65.8% of first-serve points to Bouzkova's 61.9%, and on hard that gap compounds fast. Bouzkova needs several things to break right at once; the percentages say they usually don't.