Senior carded a four-under 68 in round two, while Pavin managed a two-under 70. They finished 36 holes at 10-under-par 134. The duo will both go for their first tour title on Sunday.
Mark Calcavecchia dropped three strokes in the first three holes, but rallied for a four-under 68. He was joined in third place at minus-nine by 2010 champion Bernhard Langer, who shot three-under 69 on The Old Course at Broken Sound Club.
Peter Jacobsen had the low round of the day as he fired a seven-under 65 to jump into a tie for fifth at seven-under-par 137. He stands alongside J.L. Lewis (67), Joey Sindelar (69) and Michael Allen (67).
MORE TO FOLLOW.