After a three year hiatus, it's almost time for one of golf's fiercest rivalries to continue, as the 43rd Ryder Cup swings into Wisconsin, at Whistling Straits Golf Club.
European skipper Padraig Harrington has rested Shane Lowry for the opening foursomes, which begin at 1.05pm this afternoon, on the first of the three-day event.
World number one Jon Rahm and Sergio Garcia will face Justin Thomas and Jordan Spieth in the opening match.
Paul Casey and Viktor Hovland are to take on Dustin Johnson and Collin Morikawa.
Lee Westwood and Matt Fitzpatrick are up against Brooks Koepka and Daniel Berger.
And Rory McIlroy and Ian Poulter are to play Patrick Cantlay and Xander Schauffele.
McIlroy says unity is Europe's biggest strength.
"The Americans, obviously, they're playing for their country. What do we play for? And I say we play for each other
"We play for each other. We play for our countries, and our continent and obviously our tour, but I think the overriding feeling every year we come to the Ryder Cup is that we play for the guy standing next to us.
"And we don't want to let them down, so that's why I think the team dynamic works so well