|Hero World Challenge round three leaderboard|
|-19 B Watson (US); -17 P Casey (Eng); -16 P Reed (US), C Kirk (US); -15 J Spieth (US), B Haas (US), -14 B Koepka (US), -13 R Fowler (US), A Scott (Aus), Z Johnson (US). Selected: -3 J Rose (Eng)|
Bubba Watson holds a two-stroke lead over England's Paul Casey after both hit course record nine- under-par 63s in round three at the World Challenge.
American Watson holed a 169-yard seven iron for eagle and seven other birdies to move to 19 under in the Bahamas.
Casey had an impressive six birdies on the front nine in his bogey-free round, while Americans Patrick Reed and Chris Kirk shot 66 to be one further back.
World number one Jordan Spieth (68) and Bill Haas (66) are four off the lead.
American Brooks Koekpa remains in contention after a seven-under 65 left him five behind, with Australia's Adam Scott (66) and Americans Rickie Fowler (66) and Zach Johnson (67) a shot further adrift.
American Jimmy Walker, a co-leader with Spieth and Haas at the halfway stage, dropped away with a 71 and is seven shots off the pace entering Sunday's final round.
Englishman Justin Rose had a two-under-par 70 but at three under is 16th of the 18-man invitational event hosted by the injured Tiger Woods.