MADRID, Spain - Unseeded Misaki Doi scored her first win since the Dubai Duty Free Tennis Championships in a big way on Saturday, upsetting World No.10 Madison Keys at the Mutua Madrid Open, 6-4, 4-6, 6-4.
Doi entered the match 0-13 against top 10 players in her career, and broke a five-match skid that dated back to February with the win.
Keys won more points than Doi (108-103) over the course of the two hour, 15-minute match, was helped in part by 41 winners, but she was undone by 40 unforced errors at crucial moments, including 11 double faults.
The World No.52 hadn't won a set against Keys in the four career meetings since defeating her at Wimbledon in 2012, but three breaks of serve in the opener saw her quickly build a 5-2 lead.
The American made a late push, as several big forehands found their mark, but Doi edged out the opening set on serve at her second opportunity.
Both players steadied on serve to begin the second set, with Doi begin forced to save a break point at both 2-2 and 3-3. To her credit, Keys did not face a break point over her first four service games, and took her first lead since the early stages with a love break in the eighth game.
Though the American surrendered her serve after five break points to follow, she responded with a second love break of the Doi delivery in as many games to send the match to a decider.
A deciding break in the seventh game of the final set was the key moment for Doi, who served nearly 80 percent in the deciding set on her own opportunities. From there, she came through a pair of deuce games to secure her first victory over a top 10 player in 14 career attempts.
Around the Cája Magica on day one, Irina-Camelia Begu sent off another seeded player with a win over No.12 seed Elena Vesnina, 6-4, 6-4, while Vesnina's compatriots Ekaterina Makarova and Daria Kasatkina also tasted defeat. Kiki Bertens edged Makarova late in a 6-1, 7-6(4) victory, while Roberta Vinci topped Kasatkina, 6-1, 1-6, 6-1.