USA dominance looked set to continue in Presidents Cup golf as the host nation grabbed the lead in five of the six opening session Four-Ball matches before thunderstorms halted play.
Having already won seven and tied one of the nine contested cups, the Americans started strongly against the International team in the 10th edition at Muirfield Village Golf Club.
South African duo Charl Schwartzel and Louis Oosthuizen are all square against Phil Mickelson and Keegan Bradley through nine holes but every other International pair is losing.
In the opening matchup, Australian Jason Day and Canadian Graham DeLaet won the first hole against Hunter Mahan and Brandt Snedeker with a DeLaet birdie but lost the lead on the next hole.
That was the only lead any International team held throughout the weather-interrupted session.
Day and DeLaet fell as far as three-down through six holes but battled back to be just one-down after ten.
Adam Scott and Hideki Matsuyama lost the opening hole to Bill Haas and Webb Simpson and have been behind ever since, sitting one-down through nine.
Veteran Ernie Els and Zimbabwe’s Brendon de Jonge are two-down through seven against Steve Stricker and Jordan Spieth while South African pair Branden Grace and Richard Sterne are getting blitzed by Zach Johnson and Jason Dufner, already four-down through six holes.
Australian Marc Leishman, paired with Argentine Angel Cabrera, is finding his debut against world No.1 Tiger Woods and Matt Kuchar difficult, falling two-down through six holes.