The Internationals teams won all six of Saturday's fourballs at the Presidents Cup in South Africa to move into a 12½-9½ lead over the United States.
The Americans, aiming to win the Presidents Cup for the
fourth time in the last five events, had begun the day three points
clear after winning seven of the 10 matches played on Friday.
But the Internationals fought back, leaving it all to play for in Sunday's 12 singles matches, with 17½ points the target for victory.
Scott and South Korea's KJ Choi set the tone by beating Kenny Perry and Jerry Kelly 5 and 4.
Scott and Choi birdied five of the first nine holes to go
five up at the turn.
Australians Peter Lonard and Stephen Leaney came back from two down to beat Fred Funk and Phil Mickelson 2 and 1.
The South African pair of Ernie Els and Tim Clark levelled the score with a 3 and 2 win over Jim Furyk and Jay Haas.
Despite Perry chipping in for a birdie at the par-four 10th, Els and Clark maintained their grip, sealing the
win at the par-four 14th.
Clark hit his approach to within a foot of the pin at the
385-yard first to set up the first of three birdies in the
opening eight holes.
But he and his partner lost momentum on the back nine before
world number three Els finished the match in style, holing a
20-foot eagle putt at the 584-yard 16th.
Vijay Singh and Retief Goosen won a tight battle with world
number one Tiger Woods and Charles Howell III 2 and 1.
The Singh and Goosen pairing finished with five consecutive birdies, Singh coaxing in a
25-footer at the par-three 17th to clinch victory.
US Masters champion Mike Weir and Australia's Robert
Allenby went four up on Chris DiMarco
and Justin Leonard with six to play, but had to survive a strong
finish by their opponents before winning by a hole.
In the final match, Zimbabwe's Nick Price and Stuart Appleby
of Australia birdied three of the last four holes to beat Davis
Love III and David Toms in another close encounter.
Appleby had put the Internationals one up by holing a bunker
shot for eagle at the par-four 14th, and made the match safe by
holing a 12-foot birdie putt at the par-five 16th.