Roberto Martinez heaped praise on his young side which helped Wigan beat Hull City 3-2 in the FA Cup.
The Latics boss rested several players for the third round tie at the KC Stadium with only Hendry Thomas, James McArthur and Maynor Figueroa keeping their places from the side which drew with Bolton in midweek.
Everything was going to plan for Martinez's men with goals from Mohamed Diame and 19-year-old Callum McManaman, recording his first in a Wigan shirt, however Hull's veteran Nick Barmby gave them a scare with two late goals.
Diame's second 13 minutes from time came in between the 36-year-old Tigers midfielder's brace and proved enough for Wigan to go through into the fourth round as they held on for a 3-2 victory.
"We came here with a clear determination to be very professional, to give an opportunity to players that haven't been playing too much this season and I felt the way we applied ourselves was very professional," said Martinez.
"We controlled the game from the beginning, probably we scored at the right times but every time we went forward, especially in the second half, we looked like we were going to score."
Wigan finished the match with four 19-year-olds on the pitch as Jordan Robinson, Jordan Mustoe and Daniel Redmond joined McManaman off the bench, and Martinez was thrilled to get such a positive glimpse of the club's future.
The Spaniard said: "It was pleasing for us in the last 10 minutes to be able to send on the youngsters to enjoy the moment and the experience of how to defend a lead, and I felt the whole exercise was a real success for us.
"It gives us a lot of new players who are going to help in the first team."
Hull boss Nigel Pearson admitted the score flattered his side but took plenty of positives from the encounter.
"If I'm honest, the scoreline at the end makes it look a little bit closer than it was," he said.
"I think we were undone with a bit of pace and power and athleticism and they were by far the better side.
"I was disappointed we didn't get amongst them a little bit more and put them under more pressure. We talked about the tempo of that game before the start and we just didn't get about the field.
"We finished the game pretty well but we were also very open at the back."