Northern Ireland's Graeme McDowell and his partner Emiliano Grillo remain in a three-way tie for the lead following the second round of the QBE Shootout in Florida.

McDowell and Argentinian Grillo shared the overnight lead and are still firmly in contention after shooting a six-under 66 at Tiburon Golf Club in Naples on Saturday.

American duo Patton Kizzire and Brian Harman stayed alongside them at 19 under par going into the final day, and they were joined by Charley Hoffman and Gary Woodland, who shot an eight-under 64 to take a share of the lead.

Bryson DeChambeau and Kevin Na are a shot back on 18 under after a solid round of 67.

Defending champions Steve Stricker and Sean O'Hair are tied for seventh place at 15 under.