Braga winger Ricardo Horta capitalised on a mistake from Ryan Bennett to inflict a 1-0 defeat on Wolves in their Europa League opener on Thursday.
Wolves scored at least two goals in each of their six qualifying matches but failed to find a way through their Portuguese visitors and were dealt a sucker punch 19 minutes from time.
Horta fired home the only goal of the game at Molineux after Bennett's pass was cut out just inside the opposition half.
The Premier League side had looked the more likely side to snatch the win before Horta's strike against the run of play, but Patrick Cutrone and Leander Dendoncker squandered promising opportunities as Wolves' Group K campaign began with a defeat.