Cristian Garin has scored a massive upset…

The 24-year-old Chilean tennis player equaled the biggest win of his career on Thursday when he defeated World No. 3 Daniil Medvedev 6-4, 6-7(2), 6-1 at the Madrid Open.

Garin broke the Russian twice in the third set to reach the quarterfinals after 2 hours and 30 minutes. Garin won 75 percent of his service points, hit six aces and faced just one break point.

This is Garin’s second victory against a World No. 3. En route to the 2019 BMW Open title in Munich, the Santiago native outlasted two-time defending champion Alexander Zverev in three sets.

Garin will meet Belgrade champion Matteo Berrettini for a place in his first ATP Masters 1000 semifinal.

He is tied at 1-1 in his ATP Head2Head series against Berrettini.

Medvedev was aiming to reach his first quarterfinal in Madrid. The Russian rallied from a set down to beat Alejandro Davidovich Fokina on Wednesday to earn his first victory in the Spanish capital.

The first set went Garin’s way after a loose service game from Medvedev early on at 1-1. The second set saw no breaks of serve and Medvedev took charge of the tiebreak by attacking Garin’s backhand. It was all Garin in the third set, as he broke Medvedev twice and controlled his nerves during a five-minute delay when the net strap broke at deuce in the final game.