Wolves have moved a step closer to making it into the Europa League group stages for the first time following an impressive 3-2 away win to Torino.
Nuno Espirito's men shocked the hosts with a disciplined performance and should have taken a much healthier lead back to England.
The hosts conceded an own goal in the 43rd minute when Gleison Bremer deflected Joao Moutinho's free-kick into his own net.
Adam Traore then found Diogo Jota on 59 minutes, who calmly finished to put the English side in the driving seat.
The lead, however, lasted only two minutes as Lorenzo de Silvestri pulled one back in the 61st minute before Raul Jimenez scored a third on the 72nd minute.
Andrea Belotti's penalty on the 89th minute ensured Wolves left Italy with a single goal lead but will be pleased with a good performance.
The winner of the tie qualifies for the main group phase of the competition, with the draw set to be conducted next week.
Wolves, playing in their first European campaign since 1980-81, will advance if they avoid defeat or only lose by one goal in a low-scoring second leg.