Only Jay Haas knows what it's like to take the biggest lead in Principal Charity Classic history into the final round.
Haas handled the pressure of an equally large cushion just fine five years ago, so the odds for an unprecedented third Champions Tour title in Iowa are certainly in his favor.
Haas will carry a three-shot lead into the final round at Glen Oaks Country Club after shooting a bogey-free 6-under 65 on Saturday.
Haas also led by three after two rounds when he won the senior event in Iowa in 2007. He repeated as champion in 2008 by rallying from two strokes down in the final round.
''It wasn't comfortable then. It probably won't be comfortable now. But it beats being three behind I guess,'' Haas said.
Larry Mize eagled the 18th hole to get within three of Haas at 8-under 134. Tom Lehman is four strokes back, followed by Andrew Magee at 6 under.
Fred Funk and Kenny Perry lead four players at 5-under 137.
Haas began the day two shots behin...