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.

Dubai Basketball continues strong form across Europe
Fabrizio Romano reflects on independent media’s impact at BRIDGE
Desert Vipers down Gulf Giants to secure win in Super Over thriller
Fernandes double helps Man United to win as Wolves' misery continues
Real Madrid handed shock home loss as Celta Vigo spring surprise
