Fifth seed Ugo Humbert reached the second round of the Dubai Duty Free Tennis Championships by beating fellow Frenchman Gael Monfils 4-6, 6-3, 6-3.
Humbert avenged his recent loss to Monfils in the Doha Open quarter-finals to improve to 3-1 in their career head-to-head.
The World No. 18 will face three-time Grand Slam winner Andy Murray next.
Elsewhere, qualifier Arthur Cazaux marked his first appearance in the main draw of an ATP 500 tournament with an impressive 6-4, 7-6 victory over World No. 26 Lorenzo Musetti.
Meanwhile, fourth seed Karen Khachanov overcame a spirited performance from Luca Van Assche in a 6-2, 6-3 victory.
Khachanov, who won the Qatar Open last week, will face Czech Jiri Lehecka – who overcame a stern challenge from Hungarian qualifier Marton Fucsovics – in the round of 16 on Wednesday.

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
