Dublin - Bubba Watson moved one shot ahead of the field after firing his second straight three-under 69 in the third round of the PGA Tour's Memorial Tournament on Saturday.
The left-handed American and reigning Masters champ ended 54 holes at 12-under-par 204 at the Muirfield Village Golf Club.
In the last eight years, Watson hasn't finished better than tied for 23rd at this $6.2 million event.
Another American Scott Langley, shot five-under 67 to move into second place.
Japan's Hideki Matsuyama posted a three-under 69 and moved into third at 10-under 206. World number one Adam Scott, of Australia, carded a four-under 68 and climbed to nine-under, where he is alone in fourth place.
Charl Schwartzel, of South Africa, and Jordan Spieth both shot 67 in round three. They were joined in fifth place at eight-under-par 208 by Billy Horschel (68), Robert Streb (69), Brendon Todd (69) and second-round leader Paul Casey (76).
Leading scores after Saturday's third round of the $6.2 million US PGA Tour's Memorial tournament (USA unless noted, par-72):
204 - Bubba Watson 66-69-69
205 - Scott Langley 72-66-67
206 - Hideki Matsuyama (JPN) 70-67-69
207 - Adam Scott (AUS) 69-70-68
- Paul Casey (ENG) 66-66-76, Charl Schwartzel (RSA) 72-69-67, Billy
Horschel 71-69-68, Brendon Todd 71-68-69, Jordan Spieth 69-72-67, Robert
209 - Ben Curtis 69-71-69, Andrew Svoboda 72-69-68, Ben Martin 72-72-65
- Bo Van Pelt 72-72-66, Ryan Moore 68-70-72, Rory McIlroy (NIR)
63-78-69, Scott Brown 70-69-71, Chris Kirk 66-70-74, Luke Guthrie
211 - Justin Leonard 68-75-68, Steve Stricker 71-70-70,
Ernie Els (RSA) 70-72-69, Jason Dufner 71-69-71, Kevin Na 72-69-70,
Kevin Stadler 72-71-68, Hunter Mahan 68-70-73, Brendon de Jonge (ZIM)
73-69-69, Justin Hicks 73-67-71, Camilo Villegas (COL) 71-68-72, Jason
Day (AUS) 72-69-70