Brooks takes one-shot lead at Principal

WEST DES MOINES, Iowa, June 4 (UPI) -- Senior tour rookie Mark Brooks fired a 4-under 67 Saturday, grabbing a one-shot lead over Mark Calcavecchia after two rounds of the Principal Charity Classic.

Brooks, 50, made his debut on the Champions Tour earlier this year and is participating in only his sixth tour event. He racked up an eagle, four birdies and two bogeys in the round, finishing 36 holes at 10-under 132 at Glen Oaks Country Club in West Des Moines, Iowa.

Brooks, a seven-time PGA Tour winner and the 1996 PGA Champion, held a two-shot lead coming into the last hole but bogeyed it, seeing his advantage cut in half.

Calcavecchia posted a 5-under 66 Saturday, notching an eagle, five birdies and two bogeys, claiming sole possession of second place. The 13-time PGA Tour champion is also in search of his first senior win after more than year on the tour.

Sharing third at 8-under 134 were Bob Gilder (66) and Peter Senior (67).

Jay Don Blake (64), Brad Bryant (65), Mike Goodes (66), Steve Pate (66) and Rod Spittle (68) were all knotted for fifth at minus-6.