Rasmus Hojgaard equalled the course record at Le Golf National after firing ten birdies in his first-round 62 to lead the 2022 Cazoo Open de France by two shots on Thursday.
The three-time DP World Tour winner carded six birdies and a solitary bogey on the front side before picking up four more shots on the homeward nine to get to nine under par.
Hojgaard's stunning opening round at the 2018 Ryder Cup venue featured several highlights, including a monster birdie putt from more than 70 feet and a tee-shot that was six inches away from a hole-in-one.
Swede Alexander Björk was alone in second on seven under after notching seven birdies in his bogey-free 64.
Paul Barjon was another shot back in third after the morning starter signed for a 65 to finish the day as the leading Frenchman as continental Europe's oldest national open returned for the first time since 2019 after the Covid-19 pandemic meant it was not played in 2020 and 2021.
Hojgaard opened his first round with a birdie, rolling in a ten-footer from just on the green before giving the shot straight back at the second.
He recovered from that bogey in style, taking advantage of the long third before holing from 72 feet for an unlikely birdie at the fourth.
The Dane made it three gains in a row on the fifth courtesy of a delightful approach to four feet from the first cut of rough.
Hojgaard's impressive form on the greens continued as he sank his 15-foot birdie attempt at the seventh before pulling off a good up-and-down for par on the eighth.
After closing his front nine with another birdie at the ninth, Hojgaard came within inches of holing his tee-shot at the short 11th for an ace but instead had to settle for a tap-in birdie.