A fascinating afternoon was in store at Augusta as Jordan Spieth prepared to begin his final round in prime position to claim a second successive Masters title.
Having led after every round en route to his maiden major crown in 2015, Spieth has repeated the feat so far this week - but headed to the first tee on Sunday holding just a one-stroke advantage over PGA Tour rookie Smylie Kaufman at three under.
Spieth was four clear with two holes of his penultimate round to play, but the 22-year-old Texan's bogey, double bogey finish ensured a host of players retained realistic hopes of claiming the green jacket.
Hideki Matsuyama and Bernhard Langer, who at 58 is 12 years older than the combined age of the final pairing, were only two shots adrift of Spieth, with world number one Jason Day, Dustin Johnson and Danny Willett three back at even par.
Langer had the opportunity to become the oldest winner of a major by more than a decade, 31 years on from first winning the Masters in 1985.
Reigning champion Spieth, who could be seen working with his coach Cameron McCormick on Sunday prior to his 2:45pm EDT tee-off time (7:45pm BST), was looking to become only the fourth player to retain the Masters and could take heart from the fact he has won on the last five occasions he has led or co-led a tournament after 54 holes.
Following two days of blustery winds and bogeys aplenty, conditions appeared more conducive to low scoring on Sunday - illustrated by French amateur Romain Langasque carding a 68 to finish the tournament at 10 over par.