PEBBLE BEACH, Calif.(AP) Defending champion Tommy Armour III eagled the 18th hole Friday at Spyglass Hill en route to a 1-under 71, joining Arron Oberholser in a one-stroke lead after two rounds of the Callaway Golf Pebble Beach Invitational.
Oberholser shot a 6-under 66 with seven birdies and one bogey - the day's low round - at Spyglass Hill. He and Armour were at 7-under 137.
John Cook, who also played at Spyglass Hill and held a three-stroke lead after an opening-round 62 at Del Monte, had a 76 and was among five players at 138.
Brock MacKenzie (68, Pebble Beach) of the Nationwide Tour, Tom Purtzer (70, Spyglass Hill) of the Champions Tour, Nicholas Thompson (69, Spyglass Hill) of the PGA Tour and mini-tour player Andrew Hoffer (69, Del Monte) joined Cook at 6 under.
Former PGA Championship titlist Rich Beem (69, Spyglass), Bryce Molder (68, Del Monte) and former club pro Brad Martin (74, Spyglass) were tied at 139.
The 37th annual tournament featured players from the four major tours as well as mini-tour players, club pros and amateurs. Amateurs were competing on teams. Champions Tour and LPGA entrants received distance advantages on tee shots.
Oberholser, who caddied for his wife in the event last year while recovering from surgery, jump-started his round with a chip-in birdie from a difficult position on the first hole.
``It was good,'' Oberholser, whose lone victory on the PGA Tour was the 2008 AT&T Pebble Beach National Pro-Am, said. ``I almost impressed myself. When I chipped in on the first hole that propelled me. I was a little down after yesterday's round. But I know the formula. I know where to hit it and miss it on these courses.''
Armour, a two-time PGA Tour titlist, had three birdies and four bogeys. He ended a four-year winless streak with his Callaway victory last year.
Janice Moodie, who shot a 74 at Spyglass Hill en route to a 142 total, led the seven LPGA entrants. Juli Inkster, who defeated Mark Brooks by one stroke in 1990, is the tournament's only LPGA winner.
A Champions Tour player has never won the event.
Following the 54-hole cut, the top 40 pros and 10 amateur teams will play the final round Sunday at Pebble Beach. The winner will earn $60,000 of the $300,000 purse.