Phil Mickelson and Woody Austin pounded South African Retief Goosen and Australia's Stuart Appleby 5 and 4 to lead a US  sweep of the foursomes as the Americans regained control of the Presidents Cup today.

The sweep was just the fourth in Cup history and marks another monstrous swing in momentum giving the US a 12-5 advantage over the Internationals on a marathon day of golf at the Royal Montreal Golf Club.
   
The Internationals will have little time to lick their wounds, the two sides returning to the course later in the afternoon for the final fourball matches.
   
"I remember in South Africa (in 2000) they came back and swept us on the Saturday afternoon so we've got to keep our guard up and keep going," said US captain Jack Nicklaus.
   
The alternate shot format has proven a disaster for the Internationals who have claimed a mere half-point in 11 matches here, when Mike Weir and Vijay Singh finished all-square with Mickelson and Austin on Thursday.
   
Gary Player's men, however, will go into afternoon play with some confidence after scoring a convincing decision in Friday's fourballs trimming the American lead to 7-5.
   
But the Internationals could not carry the momentum over to Saturday, Mickelson and Austin setting the stage for the US whitewash.
   
Mickelson rolled in a four-foot birdie putt on the par-four 14th to get the US off to a winning start and give 43-year-old rookie Austin, who has been nicknamed Jacques Cousteau after tumbling face first into a pond attempting a shot from the water on Friday, his maiden Presidents Cup victory.
   
World number one Tiger Woods and Jim Furyk, embarrassed 5 and 4 in Friday's fourballs, hit back with a 4 and 3 victory over Australia's Adam Scott and South Africa's Ernie Els while Steve Stricker and Hunter Mahan topped the South African duo of Trevor Immelman and Rory Sabbantini two up.
   
Lucas Glover and Scott Verplank held off a comeback bid from Weir and Singh to win 2 and 1 while Masters champion Zach Johnson and David Toms completed the rout taming the Australian duo of Nick O'Hern and Geoff Ogilvy by the same 2 and 1 count.