Patrick Reed takes a two-shot lead into the weekend of the Masters after carding a superb second-round 66 on Friday and is Sky Bet's 3/1 favourite.
Reed birdied both the first and last three holes of the front-nine, and another run of three in succession from the 13th ensured he was the first man to reach 10-under for the tournament.
Three putts from the bottom of the 16th green saw him drop back to nine-under but two solid pars to put the finishing touches to a round of 66 earned him 3/1 favouritism as well as daylight over Marc Leishman.
"Everyone wants to win (majors) and if you don't believe you can win them, then you probably shouldn't be playing in them," Reed said. "I believe that if I play the golf that I know how to play, that I can win majors.
"I have to go in and not get ahead of myself, just take it shot by shot, hole by hole, like I've been doing. There's a lot of holes left and I just need to go out and keep to my game plan, play some solid golf and just go out and continue shooting in the 60s and see if it gets the job done."
Like Reed, Leishman (7/1) began his round with a trio of birdies and ended it with a pair of fine par saves in a round of 67, upstaging playing partner Tiger Woods for the second day in succession.
Woods bogeyed the first despite a 340-yard drive into an ideal position, and worse was to follow at the fifth as his approach flew the green and resulted in a costly double bogey.
The four-time Masters champion did well to avoid another double when finding water at the 12th, but a second-round 75 left him 11 behind Leishman and 13 adrift of the leader, Reed.
Leaderboard
-9 Patrick Reed
-7 Marc Leishman
-5 Henrik Stenson
-4 Rory McIlroy, Jordan Spieth
-3 Dustin Johnson, Justin Thomas
-2 Tony Finau, Rickie Fowler, Louis Oosthuizen, Justin Rose, Bubba Watson, Charley Hoffman
-1 Matt Kuchar, Cameron Smith, Jon Rahm, Bernd Wiesberger
Henrik Stenson (9/1) finished with a birdie at 17 followed by a par save at the last to reach five-under and enters the weekend in solo third.
He'll play alongside Rory McIlroy (6/1) on Saturday, after the Northern Irishman produced a strong closing stretch in a round of 71 which put him within five shots of the lead as he looks to complete a career grand slam.
Jordan Spieth (6/1) is alongside McIlroy on four-under after fighting back from a nightmare start to record a round of 74, while Dustin Johnson's 68 saw him make a move inside the top 10.
Three back-nine birdies saw Justin Thomas throw his hat into the ring as he joined Johnson on three-under, with Rickie Fowler (28/1) and Justin Rose (22/1) among those a shot further back on a world-class leaderboard.
Phil Mickelson was on the heels of the leaders approaching the turn but came unstuck at the ninth, finding tree trouble on his way to a triple-bogey seven, and any lingering hopes disappeared with a double-bogey five at the 12th.
Woods meanwhile is 250/1 to produce an unthinkable turnaround as a man who grew up idolising him heads the leaderboard entering the weekend at Augusta.