Champions PGA Tour:

West Des Moines, IA (Sports Network) - Jay Haas, the reigning Champions Tour Player of the Year, overcame a double-bogey on Saturday with six birdies in a seven-hole span to increase his lead at The Principal Charity Classic.

Haas shot a four-under 67 in the second round and is three ahead at 10-under- par 132.

David Edwards shot a three-under 68 on Saturday and is alone in second place at minus-seven. Denis Watson, who won the Senior PGA Championship last month, posted a four-under 67 and has third place at six-under-par 136.

Haas, who held a one-shot lead over Dave Eichelberger at the start of the second round, bogeyed the par-three second hole. He got that stroke back with a 10-foot birdie putt at the par-three fifth, but trouble loomed.

At the par-four eighth, Haas drove his ball well to the right. His second shot remained in the tall grass and he finally reached the putting surface with his fourth shot. Haas missed the 35-footer for bogey and found himself trailing the lead.

That was short-lived for Haas, an eight-time winner on the Champions Tour, including two this year. He reached the par-five ninth green in two and two- putted for a birdie from 25 feet. Haas made it two in a row with a sensational seven-iron tee ball that rolled back to a foot.