Cristina Bucsa vs Maja Chwalinska — R64 — Cincinnati Open

The second serve was the separator, and across three hours it kept costing Bucsa, the market's narrow pre-match favorite, who won five of the 19 points she played behind it and held twice in eight service games. Her one foothold came in game 3 of the second set, a break for 2-1. It lasted one game. Chwalinska broke back in game 4 for 2-2, closed the set 3 for 3 on break points, and won 75 percent of her first-serve points in it to Bucsa's 37. That is the 19th seed's game as built — slice, spin and drop shots off a modest serve, the return doing the damage — and it ends a three-match losing run dating to the Roland-Garros final. Three hours and four minutes for 102 points, and next is Diana Shnaider, the No. 17 and the last opponent Chwalinska beat, in the Paris semifinal.