Derrey joins front-runners
Local professional Valentine Derrey shot a 67 to join the home charge atop the Ladies Open de France leaderboard with one round to go.
Derrey was three off the overnight pace set by Gwladys Nocera and Joanna Klatten at Chantaco in Saint-Jean-de-Luz - just across the River Nivelle from her home town of Ciboure.
But the 26-year-old offset a dropped shot at the first with four birdies on the remainder of the front nine and parred home to move level with her French compatriots, who could only manage level-par rounds on a testing day to remain at 10 under for the tournament.
Nocera looked to have nudged ahead when she recorded her fourth birdie of the day at the 17th but a five at the last took her back into a three-way tie.
Klatten was two over for the day after six holes but responded with three birdies, only for a bogey at the par-four 14th to drop her back to her starting mark.
The leading trio were being pursued by Solheim Cup winners Azahara Munoz at nine under and Carlota Ciganda and Charley Hull, who were eight under alongside South Africa's Lee-Anne Pace.
England's Liz Young was alone at seven under with Australians Sarah Kemp and Nikki Campbell completing the top 10 at six under. Young and Kemp each shot 65, the best rounds of the day.