Katie Boulter vs Kayla Cross — R128 — Canadian Open

Return-game conversion decided it. Kayla Cross cashed 3 of 4 break points while Katie Boulter, a 72% favorite with the betting market, went 2 of 6 — none of four second-set chances — and double-faulted 12 times to the wild card's six. Game 11 turned both sets: Boulter broke there for 6-5 in the opener, the left-hander answered in game 12 for 6-6 and took the tiebreak, and her own game-11 break in the second, for 6-5, was the one that stood. Boulter saved a match point, but the 21-year-old Canadian closed in 1 hour, 58 minutes behind 11 aces to the favorite's two — a career-best win by opponent rank at her home Canadian Open.