That's the end of this live page now. Thanks for joining me tonight.
The second leg is next Thursday (1 August).
The next round starts the following week, with the winners of this facing either Pyunik of Armenia or Czech side Jablonec.
Pyunik won their home leg 2-1 earlier today.
Crusaders boss Stephen Baxter to Premier Sports: "We thought we'd got out of here with a 1-0. It wasn't to be.
"Sean O#Neill was one of our best players, he made some wonderful saves. He's a wee bit gutted.
"We gave a masterclass in defending. We're a small part-time football club from Northern Ireland we held a great shape.
"It might be a little bit different [in the second leg] with a 3,000 stadium and plastic pitch.
"It was difficult to get any possession tonight. We could have come here and lost by 10 goals. But this is a proud moment in our history.
"I've been here 20 years as a player and manager and that's the best performance I've ever seen from us."
Wolves boss Nuno Espirito Santo to Premier Sports: "It's tough, the season starts earlier. Players come in on different dates.
"We showed we are ready but not as sharp and accurate as we should be. Crusaders fought for every ball to prevent goals. It will be tough [in the second leg]. We will have to be focussed in Belfast.
"It [the second goal] makes a difference. To control the levels of anxiety during the game is tough. When a team are organised and fight for their lives, it's difficult.
"It was a special night at Molineux, the atmosphere was good.
"We must bring players. That's obvious. But we must bring quality to maintain our high standards."
Rangers beat Progres Niederkorn 2-0. Read the report here.
That is such a huge let-down for Crusaders, who may have felt they stood a chance going into next week's second leg in Belfast at 1-0.
But a 2-0 lead is a different scenario altogether.
The referee lets Crusaders kick off and then blows the final whistle.
Disaster for Crusaders.
Goalkeeper Sean O'Neill has been brilliant all throughout the game. But he drops a Joao Moutinho cross straight to Ruben Vinagre, who taps into an empty net.
Wolves want a penalty as Raul Jimenez crosses the ball straight into the hand of Sean Ward, whose arm was by his side.
Ryan Bennett's cross is headed out for a throw-in. We are halfway through injury time.
Three minutes added on. Can Crusaders see this narrow defeat out?
Adama Traore cross, Ruben Vinagre header. Save.
Good defending by Chris Hegarty to block Leander Dendoncker's cross. Crusaders keeper Sean O'Neill does well to clear the resulting corner.
Crusaders send numbers forward for an attempted break but it fizzles out. Not sure they've had a proper attack since the 10th minute.
Raul Jimenez's header loops over the goalkeeper but wide of the far post.
Not to Wolves fans I'm sure, but a second goal would be an anti-climax now. This scoreline would give Crusaders a chance - albeit a small one - for the second leg.
Standing ovation for Wolves youngster Morgan Gibbs-White as he's replaced by Romain Saiss.
Crusaders have done so little attacking that when they get the chance, they're not really in a position to break. Joao Moutinho's cross is cleared, but David Cushley's long ball forward is beyond Paul Heatley - the only man within 70 yards of the Wolves goal.
Final change for Crusaders as David Cushley replaces Rory Hale, who takes his time to come off.