Nuno Espirito Santo maintained his winning start as Tottenham boss in the Premier League against former side Wolves as Harry Kane came off the bench for his first appearance this season.
Dele Alli scored the only goal from the spot after being brought down by Wolves goalkeeper Jose Sa nine minutes in.
Wolves dominated at Molineux but failed to capitalise, with Adama Traore denied by Hugo Lloris when through one-on-one.
Nuno called on Kane, a target for Manchester City, with 20 minutes to go.
The England captain had a chance to double the visitors' lead from Steven Bergwijn's pass, but Sa saved from a narrow angle.