Tom Watson spoke of his pride at the performances of rookies Jordan Spieth and Patrick Reed in Friday's Ryder Cup fourballs action.
The young pair got the United States' first point on the board with a resounding 5 and 4 victory over Ian Poulter and Stephen Gallacher at Gleneagles.
It helped the visitors assume an early advantage after the fourballs, as Spieth and Reed belied their inexperience in the competition to turn in a surprise win.
Poulter, so often a Ryder Cup hero in the past, and home favourite Gallacher had no answers to their American opponents and Watson revealed the pair were less than happy not to be selected for the foursomes later in the day.
"I'm so proud of them," said the US captain.
"They were very upset with me for not playing them this afternoon.
"I said, I know you're going to be mad at me, but you'll be playing tomorrow for sure."
Spieth, the younger of the pair, weighed in with three of the pair's six birdies while Reed was in similarly fine form on the greens as they made a dream start to the competition.
The 21-year-old Texan paid tribute to his partner and said the two were ways confident of performing well.
"It feels incredible," he said.
"It was a goal we had to achieve. It was nice to have a partner that was making everything he looks at.
"We kind of convinced the captain that we were a great best ball team. That was our strong format.
"We played extremely well in alternate shot as well. It means a lot that he has that trust in us."