It’s a major first for Alex de Minaur…

The 20-year-old Uruguayan & Spanish Australian tennis player upset No. 7 seed Kei Nishikori to book his spot in the fourth round at the US Open.

de Minaur, currently ranked No. 36 in the world, moved into the second week of a Grand Slam for the first time in his career, advancing to the Round of 16 at Flushing Meadows with the 6-2, 6-4, 2-6, 6-3 win. 

The victory carries extra significance for de Minaur, who snapped an 0-11 record against Top 10 opponents. He defeated Nishikori in two hours and 48 minutes.

“The crowd support was amazing,” De Minaur, who claimed his maiden ATP Tour title at the Sydney International in January, said after the match. “I had a bit of a thrill last year against [Marin] Cilic. Was two-sets-to-love up again and I’m glad I could finally get the win.”

In search of a second straight appearance at the Next Gen ATP Finals, de Minaur is looking to build on his third-place standing in the ATP Race To Milan. 

He’ll next face Grigor Dimitrovon Sunday.

de Minaur had previously reached the third round at Wimbledon and the Australian Open.