Finland's Sanna Nuutinen and Australia's Stephanie Kyriacou could not be separated after 54 holes of the Big Green Egg Open in Holland.
The pair shared the halfway lead at Rosendaelsche Golf Club and posted matching rounds of 65 on Friday to remain tied at the top of the leaderboard on 13-under par.
Kyriacou fired four birdies in a row from the third and picked up four more shots on the back nine before carding her only bogey of the day on the par-five 17th.
Nuutinen also covered the front nine in 32 and birdied the 13th, 14th and 17th to keep pace with her playing partner.
Thailand's Atthaya Thitikul, who won last week's Tipsport Czech Ladies Open, is four shots off the lead after a 67, with Scotland's Kylie Henry and Austria's Christine Wolf another three strokes back on six under par.
