Britons David Carter and Ross Fisher and New Zealander Steve Alker shared a two-shot lead on nine-under-par 201 after Saturday's Dutch Open third round.
Carter, the overnight leader, looked as though he had reclaimed top spot with birdies on the 16th and 17th holes but the Englishman bogeyed the 18th for a one-over 71 to drop back into the tie.
Both his co-leaders are looking for maiden full tour titles. Fisher, who was sharing the lead in the tour's flagship event, the PGA Championship at Wentworth in May with a round to go, carded a 68.
Alker, struggling to retain his card for next year, posted a 69.
Fisher, 26, in his second year on tour, also had a chance to win the Dubai Desert Classic in early February but, playing alongside world number one Tiger Woods, had to settle for fifth place. In the PGA, a collapse with an 84 plummeted the Englishman to a tie for 39th.
He is hoping his Dubai and Wentworth experiences will stand him in good stead in Sunday's final round at Kennemer.
"Dubai was an amazing experience," Fisher told a news conference, "shooting two 65s and playing with Ernie (Els) on the Saturday and Tiger on Sunday. A lot of guys wait their whole careers to do that and this is only my second year on tour.
"Wentworth was fantastic for three days and disastrous for one day. I know I'm ready to win."