Brandt Snedeker goes into the weekend in Pebble Beach, Calif., with another chance to win, this time without golf's biggest stars in his way.Snedeker played bogey-free at tough Spyglass Hill on Friday for a 4-under 68, giving him a share of the lead with Ted Potter Jr. in the AT&T Pebble Beach National Pro-Am.Potter three-putted his final hole at Monterey Peninsula for a 67. Colleyville resident Hunter Mahan was among those one shot behind.With one more round before everyone has played all three courses in the rotation, the leader board was a big traffic jam. Three dozen players were within five shots of the lead.Snedeker, at 8-under 134, felt he's at an advantage playing Pebble Beach for the final two rounds.Snedeker was runner-up the last two weeks, finishing four shots behind Tigers Woods, who is not playing this week, at Torrey Pines, and then four behind Phil Mickelson in the Phoenix Open.Mickelson, seeking a record-tying fifth win in the event, was nearing contention until he made three bogeys in a four-hole stretch at Spyglass Hill for a 71.Fredrik Jacobson had the low round of the day, a 66 at Pebble Beach.Former Texas Longhorns star Jordan Spieth and Cowboys quarterback Tony Romo are tied for fourth in the pro-am.Briefly Champions Tour: Bernhard Langer and Tom Pernice Jr. are tied after each fired a 66 in the opening round of the Allianz Championship in Boca Raton, Fla. Defending champion Corey Pavin and two players making their tour debuts, Rocco Mediate and Bart Bryant, are among six players a shot back. European Tour: Trevor Fisher Jr. shot a 9-under 62 and Richard Sterne had a 65 to share the lead after the second round of the Joburg Open in Johannesburg.