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.
Banton blitz lifts England past Scotland in T20 World Cup
Tudor appointed as interim Tottenham manager until end of season
Eight teams qualify for Dubai Games finals
Shaidorov shocks rivals to capture gold as 'Quad God' Malinin crumbles
