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.
Ireland beat India for first time in international cricket
Usyk vacates titles before 'last dance'
England roar back in second test against New Zealand
Williams to face Australia's Joint in Wimbledon comeback
Australia reach World Cup knockouts, Turkey beat USA
