Enzo Le Fee’s second-half penalty settled a thrilling contest at the Stadium of Light, securing the Black Cats’ first European victory in 53 years.
Goalkeeper Robin Roefs made several crucial saves, including an early stop to deny Kees Smit, while Kevin Danso, Nordi Mukiele and Dan Ballard produced vital blocks as AZ pushed for an equaliser.
The memorable night ended with the Lads celebrating a significant moment in the club’s history and their long-awaited return to European competition.
“We showed up to win and whatever way you choose to do that is important,” Le Bris said after the game.
“I think in the first half we deserved to do that.
“We didn’t score and it is always a shame when you build strong momentum not to score.
“They played in transition and they are a really good team - it was hard for us to protect the ball.
“The first half was good and we dominated the game with our ideas.
“We pressed high and they let our goalkeeper have the ball.
“It was different from usual but we found different solutions," he continued.
“We feel the quality of the squad and the mentality of the squad.
“It is about experiences, and this one was tough, but in the Premier League it is so demanding.
“It is a tough week but it is exactly what we want to do.”