World number six Stefanos Tsitsipas has advanced to the last-16 of the Dubai Duty Free Tennis Championships.
The 21-year-old Greek defeated Spain’s Pablo Carreno-Busta 7-6, 6-1 to book a clash with Alexander Bublik, who beat Hubert Hurkacz 6-2, 7-5.
Meanwhile, 2018 winner Roberto Bautista Agut, former US Open champion Marin Cilic and fourth seed Fabio Fognini have crashed out of the tournament.
The fifth-seeded Bautista Agut suffered a 6-7, 5-7 defeat to Germany's Jan-Lennard Struff, while Cilic lost to Frenchman Benoit Paire 6-2, 5-7, 6-7 and Fognini went down to Britain's Dan Evans 6-3, 4-6, 5-7.


Mumbai's IPL campaign fizzles amid Bumrah's barren run
Iran women soccer players thank Australian government for protection
Villa's Watkins looking to make late push for England World Cup squad
Former Arsenal, Juventus goalkeeper Manninger dies in road accident
French Open prize money increases, retiring players to be honoured
