AFC Wimbledon manager Neal Ardley hailed the performance of Jake Goodman after the Millwall loanee helped keep a clean sheet on his debut yesterday.
Goodman, 21, played 90 minutes for the Dons as they beat Wycombe Wanderers 1-0 in the second round of the FA Cup.
And Ardley said: "I thought Jake was immense. He won bundles in the air and at the end he had cramp and could barely jump.
"On one hand the game was always going to be ideal for him because it was going to be high-tempo and they were going to throw a lot of balls forward, but it was also brave to throw him in for such an important match.
"He should be proud of his debut."
Goodman was given permission by Lions boss Ian Holloway to play in the competition but Fred Onyedinma, who is at Wycombe until January, was not given the green light.
Millwall will be in tonight's draw for the third round.