Adam Gee and Simon Wakefield are part of a three-way tie at the top of the leaderboard after the opening round of the St Omer Open.
The Englishmen joined Sihwan Kimon four under par with rounds of 67.
Gee enjoyed back-to-back birdies on the final two holes, and then watched on as the others suffered late slips, Wakefield bogeying the 15th and 16th, and Kim dropping two shots amid three birdies on the back nine.
Gee is still getting over a lengthy hip injury, and his strong showing here has given him much encouragement.
"It's a good start," the 31-year-old told europeantour.com. "I had some good fortune today - I hit the flag on the 17th and it went in, and on the 18th I hit a good shot from a bad lie and it ran up nicely to the hole.
"It's a quirky golf course and you get good breaks and bad breaks. Sometimes good shots go badly and bad shots turn out well. I managed to get the most out of the good stuff today.
"Last year was very frustrating. I was either playing badly or I was injured. The cartilage between two bones in my hip was torn, so I had surgery to repair it.
"But everyone gets injured, that's just the way it goes. Luckily I had some great advice and good help from the right people and it's fine now."
Kim also admitted to some good luck along the way in his round.
"I missed in the right places," the 23-year-old said.
"I wouldn't say I was hitting the ball terribly, but I certainly wasn't striping it. I got some lucky bounces here and there.
"I've been working hard on my putting. My speed has been a little off and my short putting has been horrendous in my last two or three events."
The three sit one shot clear of Raul Quiros, Darren Fischardt and Raymond Russell.
Collated first round scores (Gbr & Irl unless stated, par 71):
67 Sihwan Kim (Nor), Adam Gee, Simon Wakefield
68 Raul Quiros (Spa), Darren Fichardt (Rsa), Raymond Russell
69 Gary Lockerbie, Colm Moriarty, Alastair Forsyth, Berry Henson (USA), Scott Pinckney (USA), Steven Tiley, Anthony Snobeck (Fra)
70 Roope Kakko (Fin), Benn Barham, Pelle Edberg (Swe), Edouard Dubois (Fra), Julien Grillon (Fra), Lloyd Saltman, Jamie Elson, Thomas Norret (Den), Andy Sullivan
71 Raphael Eyraud (Fra), Julien Guerrier (Fra), Chris Paisley, Wil Besseling (Ned), Sam Hutsby, Daniel Denison, James Heath, Florian Praegant (Aut), Jean-Francois Lucquin (Fra), Reinier Saxton (Ned), Alexandre Kaleka (Fra), Simon Thornton
72 Craig Lee, Ben Evans, Daniel Gaunt (Aus), Anders Schmidt Hansen (Den), Gary Stal (Fra), Tyrrell Hatton, Carlos Aguilar (Spa), Carl Suneson (Spa), Andrew Marshall, Andreas Harto (Den)
73 Mikael Lundberg (Swe), Chris Gane, Andrew Tampion (Aus), Maximilian Kieffer (Ger), Klas Eriksson (Swe), Callum Macaulay, Federico Colombo (Ita), Adrian Otaegui (Spa), Magnus A Carlsson (Swe), Shiv Kapur (Ind), David Howell, Matthew Zions (Aus), Matthew Southgate, Jason Knutzon (USA), Uli Weinhandl (Aut), Sam Walker, Justin Walters (Rsa), Charles-edouard Russo (Fra), Cesar Monasterio (Arg), Andrea Perrino (Ita)
74 Andrew Johnston, Floris De Vries (Ned), Martin Erlandsson (Swe), Romain Schneider (Fra), Rafael Echenique (Arg), Jose-Filipe Lima (Por), Jordi Garcia (Spa), Antti Ahokas (Fin), Tyrone Ferreira (Rsa), Roland Steiner (Aut), Eduardo De La Riva (Spa), Eddie Pepperell, Olly Whiteley, Stuart Davis, Charlie Ford, Augustin Domingo (Spa), Matthew Nixon, Maarten Lafeber (Ned), Sebastian Buhl (Ger), Max Glauert (Ger), Dominique Nouailhac (Fra), Nicolas Joakimides (Fra), Andrew Parr (Can), Taco Remkes (Ned)
75 Alvaro Velasco (Spa), John Parry, Robert Dinwiddie, Oliver Wilson, Jordi garcia Pinto (Spa), Johan Wahlqvist (Swe), Mu Hu (Chn), Nicolas Meitinger (Ger), Joachim B Hansen (Den), Alessandro Tadini (Ita), Matthew Cryer, Victor Riu (Fra), Benjamin Hebert (Fra), Michael Lorenzo-Vera (Fra), Bjorn Akesson (Swe), Guillaume Cambis (Fra), Scott Henry, Rikard Karlberg (Swe), Seve Benson, Adrien Bernadet (Fra), Michiel Bothma (Rsa), Paul Dwyer, Daniel Vancsik (Arg), Knut Borsheim (Nor), Thomas Feyrsinger (Aut), Christopher Doak
76 Lasse Jensen (Den), Sion E Bebb, Baptiste Chapellan (Fra), Pierre Relecom (Bel), Morten Orum Madsen (Den), Francis McGuirk, Andrew McArthur, Julien Clement (Swi), Damien Perrier (Fra), Daniel Brooks, Espen Kofstad (Nor), Nick Dougherty, Scott Strange (Aus), Peter Gustafsson (Swe), Ben Parker, David McKenzie (Aus), Phillip Archer
77 Hans Peter Bacher (Aut), Ake Nilsson (Rsa), Francois Delamontagne (Fra), Fredrik Henge (Swe), Christophe Brazillier (Fra), Lloyd Kennedy, David Dixon, Jordan Gibb
78 Marco Crespi (Ita), Garry Houston, Mark Tullo (Chi), Chris Lloyd
79 Ming Jie Huang (Chn), Steven Jeppesen (Swe)
80 Richard Bland, Jeppe Huldahl (Den), Byeong-Hun An (Kor), Peter Karmis (Rsa), Dewi Merckx (Bel), Bernd Ritthammer (Ger)
81 Peter Uihlein (USA), Jamie McLeary, Matt Ford
82 Yu-xiang Liu (Chn)
RTD: Steven O'Hara