Hunter Mahan has birdied three consecutive holes, No.'s 3, 4 and 5, Sunday at the Bridgestone Invitational on the South Course at Firestone Country Club.
Mahan is tied for second with Matt Kuchar and Ryan Palmer, one shot behind the leader Sean O'Hair.
O'Hair birdied No. 1 and bogied No. 2.
Bo Van Pelt is fifth and two shots off the lead.