Pavin birdied six holes in a seven-hole stretch on the back nine of The Old Course at Broken Sound Club in Boca Raton, Fla., putting him two shots in front of former champion Bernhard Langer, Peter Senior and Fred Funk.
Langer hopes to return to the form that made him the hottest player on the Champions Tour in 2010. He missed much of the 2011 season following wrist surgery.
Defending champion Tom Lehman settled for a 71, leaving him in a tie for 40th.
Swim Week Miami Beach 2014 [PHOTOS]