Hwang Hee-chan scored on his debut as Wolves got their first Premier League goals of the season in a victory over Watford.
Bruno Lage’s side had lost their first three games 1-0, and it took Francisco Sierralta heading into his own net from Marcal’s cross to give Wolves the lead.
After Marcal’s shot was blocked on the line, Hwang came off the bench and stabbed home the rebound from close range.
Watford’s league-record 10-game winning home run, which helped them win promotion from the Championship, comes to an end.
Before the goal, Nelson Semedo had the best chances for Wolves, but he shot straight at keeper Bachmann from a through ball by Francisco Trincao – and then slotted wide from Raul Jimenez’s backheel.
Jimenez, who hasn’t scored since fracturing his skull in November, headed Joao Moutinho’s free-kick just wide.
Watford, who have not scored since the first day of the season, had chances, with Moussa Sissoko’s effort well saved, but they faded after the break.
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Does Wolves’ season start here?
Wolves had the third most shots in the league after three games and were unlucky not to have taken any points from games against Leicester, Tottenham, and Manchester United.
However, they finally broke through against Watford, winning the first half and dominating the second.
Hwang, who has scored in only 20 minutes of English football, could be the man to help them become more prolific. When the 25-year-old South Korean forward, on loan from RB Leipzig, came on, he was lively.
When Marcal’s shot was blocked, he was in the right place, and after Bachmann almost saved the ball on the line, Hwang hammered it into the net again to make sure.
Wolves require goal support because Mexico’s Jimenez is still not fully recovered from his long-term injury.
Adama Traore shone on the wing as usual, playing on the left in the first half and the right in the second.
But it took a player from the opposition to end their drought, in Sierralta – who was only allowed to play at late notice following a deal with Chilean FA.
Lage’s substitutions paid off through with Daniel Podence putting in the cross that led to Hwang’s goal.
With another promoted side Brentford coming up next, the Molineux team will be hoping to start a climb up the table.