Defending champion Daniil Medvedev reached the semi-finals of the Dubai Free Tennis Championships with a 6-2, 6-3 win over Alejandro Davidovich Fokina.
The World No. 4 will face either Hubert Hurkacz or Ugo Humbert in the last-four.
Elsewhere, second seed Andrey Rublev advanced to the semi-finals when American Sebastian Korda retired with injury.
Rublev was leading 6-4, 4-3 when Korda pulled out.
The World No. 5 Russian will play Kazakhstan's Alexander Bublik, whose opponent Jiri Lehecka retired on Thursday.
Bublik, seeded seventh, led 6-4, 4-1 when Lehecka withdrew from the the quarter-final match.

Ferdinand admits doubts over Pochettino's impact on Manchester United
Mbappe out for France's Nations League fixture
Andreeva reaches WTA Finals semis, Svitolina fights back to beat Muchova
Victory Team's Ahmad Al Fahim takes on Dubai T100 for third year running
FIFA clears joint bids for 2031 and 2035 Women's World Cups
