Premier League side Watford were made to sweat to beat lowly Championship club Queens Park Rangers 1-0 on Friday and book their spot in the FA Cup quarterfinals for the second time in four seasons.
Watford had possession in the first half but struggled to make any inroads against the solid home defence until Etienne Capoue swept a low shot into the net in first half stoppage time.
QPR turned the tables after the break, controlling the midfield but lacking the final touch up front.
Watford, who have never won the competition, put the ball in the net again in the 73rd minute but Andre Gray's effort was ruled offside in a very narrow call.
The visitors defended well in the final minutes, dropping deep to protect their lead as QPR frantically searched for an equaliser, with captain Toni Leistner missing a golden opportunity from point-blank range .
Premier League heavyweights Manchester City are in action on Saturday at Newport County (live on ESPN+ at 12.30 p.m. ET).