Alejandro Davidovich Fokina has pulled off a major upset… 

The 24-year-old Spanish professional tennis player earned his fifth Top 10 win on Thursday when he claimed a hard-fought 7-6(4), 4-6, 7-6(4) victory against World No. 5 Casper Ruud at the Canadian Open.

After Davidovich Fokina clinched the first set, play was suspended for one hour and 34 minutes due to rain. Ruud came out firing on the resumption and was two points away from victory, leading 5-3, 30/0 in the third set before the Spaniard came roaring back to clinch a thrilling victory after three hours and three minutes in Toronto.

Davidovich Fokina hit 58 winners and played aggressively in the late stages of the deciding set, advancing to his fourth ATP Masters 1000 quarterfinal.

“I kept very focused on every point,” Davidovich Fokina said. “He had the serve to close out the match, but I was focused on every point to be there and not give up. It was very tough. We played long rallies, with a lot of pressure. When I broke for 4-5, it was a show of power to finish the match.”

With his first Top 10 win on a hard court, Davidovich Fokina improved to 2-1 in his ATP Head2Head series against Ruud, whose best result this year was a run to the final at Roland Garros.

The World No. 37 will meet Mackenzie McDonald in the quarterfinals.