Trailing 7-5 overnight, the visitors won two and a half points from the morning foursomes before claiming eight of the 10 singles matches to secure an emphatic victory by 15.5 points to 10.5 points.
Scotland’s Sandy Scott enjoyed a superb 4&3 win over the previously unbeaten Brandon Wu and Tom Sloman beat Steven Fisk in the final match but defeats for Alex Fitzpatrick, Euan Walker, Caolan Rafferty, Harry Hall, Conor Purcell and Thomas Plumb sealed the USA’s victory with three matches still on the course.
“The lads will probably learn a lot from this disappointment today,” Watson said.
“It was a tough course the way it was set up. If you were ahead early pars were enough to stay ahead because birdies were going to be few and far between and the American boys did that very well.
“I don’t think playing in (more) wind would have made too much of a difference. I don’t think the conditions had anything to do with the fact that the Americans outplayed us today.”
United States captain Nathaniel Crosby, the youngest son of Hollywood star Bing Crosby, admitted his highly-rated side had been given a wake-up call with world number one Cole Hammer losing his first two matches before thrashing Purcell 6&5 in the singles.
“I am very excited,” Crosby said. “I spent a year and a half hand-selecting this group of talent and I got the team that I wanted. We were a crazy mix of personalities but all blended well.
“It was almost too much fun but after yesterday we sobered up and really focused today and it was an amazing afternoon.
“I let them just go play. They are very talented guys who believe in themselves. Their talent came to the surface and I could not be more excited for them and me; I’ve not won anything in about 38 years.” PA