Vasek Pospisil booked another meeting with fellow Canadian Denis Shapovalov after defeating Aljaz Bedene at the Open Sud de France.
Having lost to Shapovalov at the Auckland Classic last month, Pospisil will face him again following a 6-3 6-4 win over Bedene in the first round of the ATP 250 event on Monday.
Shapovalov, seeded third, has a bye in the first round along with Gael Monfils, David Goffin and Grigor Dimitrov.
Fifth seed Felix Auger-Aliassime does not play his opener until Tuesday, meaning the highest ranked player in action was Spain's Pablo Carreno Busta, but the Spaniard fell to a shock 3-6 6-4 6-3 defeat against Norbert Gombos.
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In the day's other game, home favourite Gregoire Barrere sealed a round-two meeting with Dimitrov after a 6-2 7-6 (8-6) triumph over Joao Sousa.
Australian world number 99 Alexei Popyrin plays Adrian Mannarino in the first round, with the winner taking on former two-time winner Monfils in the second round.
At the Pune Open, fifth seed Yuichi Sugita cruised past Thomas Fabbiano 6-3 6-0, but there were defeats for home hopes Sumit Nagal and Ramkumar Ramanathan respectively in their matches against Viktor Troicki and Salvatore Caruso.
Ivo Karlovic is also out after losing in straight sets to Cedrik-Marcel Stebe, who will next face second seed Ricardas Berankis.
Aussie James Duckworth is the sixth seed heading into the ATP 250 tournament and plays Germany's Peter Gojowczyk in the first round.
It will be the first meeting between world number 96 Duckworth and the 106th ranked Gojowczyk.