Marcos Giron continues his impressive run in Japan…

The 30-year-old Spanish American professional tennis player pulled off an upset against eighth seed Felix Auger-Aliassime, defeating the Canadian tennis player 6-1, 6-4 triumph o advance to the semifinals of the Kinoshita Group Japan Open Tennis Championships.

Giron, currently ranked No. 79 in the world, is a qualifier for the tournament.

Giron rode a lightning-fast start in both sets to an 81-minute win against Auger-Aliassime, who had shown signs of a return to form by reaching his first tour-level quarterfinal since May.

Yet he could not match Giron’s consistency in blustery conditions inside Ariake Coliseum. He led 4-0 in the first set and 3-0 in the second, ultimately converting five of eight break points he earned to charge into his maiden ATP 500 semifinal.

“I’m really happy with today’s performance,” said Giron, who held his nerve after losing four of five games in the middle of the second set. “Felix is obviously a phenomenal player, been Top 10 in the world, won a lot of titles. He’s beaten me down pretty good the last few times we played, so coming in today I knew I had to play well and I had to play aggressive.

“It is windy, but I started off really well. In the second set I went up a break and it cooled off, got even windier, and it got a little tricky. He raised his level, but we are professional tennis players, we do this for a living, and we’ve got to be ready for anything that comes our way.”

Giron has previously upset Norwegian Casper Ruud, the second seed, 6-3, 6-4 on Wednesday to move into the quarterfinals.

He’ll next face fellow American Ben Shelton in the semifinals on Saturday.