Arthur Gea vs Michael Zheng — R16 — Los Cabos Open

First-serve production decided every swing of this match. Michael Zheng won 82 percent of first-serve points behind three breaks in a shutout opener, and his game-7 break in the second had him up 4-3. Arthur Gea didn't drop another game. By the third the inversion was complete, Zheng's first-serve winning rate down to 38 percent while the winner's sat at 78, his four aces and a 3-for-3 break-point run compressing the set into 24 minutes. Zheng out-converted him on break points, 4 of 8 to 5 of 11, and still came up six points short overall. Gea's 1-hour, 55-minute comeback, his second three-set win of the Los Cabos Open week, books a quarterfinal with Francisco Cerundolo, the ATP No. 22 at the time.