Second-seeded Andrey Rublev has defeated fifth-seed Hubert Hurkacz in three sets on centre court at Dubai Tennis Stadium.
The night's first semi-final in the Dubai Duty Free Tennis Championships lasted 2h23m09s and finished with a 6-3 5-7 6-7 scoreline.
The Russian will play the winner of the second semi-final between Jiri Vesely and Denis Shapovalov.
Vesely booked his spot in last night's upset of the tournament.
The 123rd ranked Czech beat the world number one and top-seed Novak Djokovic 6-4 7-6 last night.


Raphinha, Fermin score as Barcelona beat Athletic in home opener
Chelsea and Fulham reach League Cup third round as Welbeck scores on debut
PSG to meet Barca, Man City as Champions League draw throws up marquee ties
Abbas gives Pakistan slight edge as England battle back at Lord's
UEFA suspends FIFA boycott threat but steps up pressure on world body