Bulgarian Grigor Dimitrov fell in the first round of the Madrid Open on Monday after losing in straight sets to South African Lloyd Harris.

Harris, who beat world No.4 Dominic Thiem and Denis Shapovalov en route to the final in Dubai in March, pulled off another upset by ousting Dimitrov 6-3, 3-6, 7-6 (5).

The world No.54 withstood a late retaliation from 13th seed Dimitrov, who saved three match points in the final set before falling back to force a tie-break. β€œIt was a top-down game, I had a set and a break, and then I also took a break in the third,” said Harris. β€œI got a little nervous at the end, but I was happy to finish.”

Quarter-final double John Isner beat Serbian Miomir Kecmanovic 6-4, 7-6 (6) while 11th seed Shapovalov beat fellow Serbian Dusan Lajovic 6-1, 6-3.

In doubles, Rohan Bopanna and Shapovalov beat Marc Lopez and Jaume Munar 7-6 (4), 6-4 in the first round. The Indo-Canadian duo will challenge seeded Juan Sebastian Cabal and Robert Farah of Colombia in the pre-quarterfinals.

Kvitova makes you sweat

In the women’s draw, Petra Kvitova, the champion in 2011, 2015 and 2018, had to work hard to beat Russian Veronika Kudermetova 6-3, 4-6, 6-4 and reach the quarter-finals.

The results: Men (first round): John Isner bt Miomir Kecmanovic 6-4, 7-6 (6); Aslan Karatsev by Ugo Humbert 7-5, 6-4; Lloyd Harris by Grigor Dimitrov 6-3, 3-6, 7-6 (5); Dominik Koepfer by Reilly Opelka 6-4, 6-4; Daniel Evans bt Jeremy Chardy 7-6 (6), 6-7 (7), 6-2; Carlos Alcaraz by Adrian Mannarino 6-4, 6-0.

Women (round of 16): Petra Kvitova by Veronika Kudermetova 6-3, 4-6, 6-4; Belinda Bencic bt Ons Jabeur 7-6 (2), 4-3, retd.

.