Manchester United will face Fulham in the fourth round of the FA Cup after edging West Ham 1-0 on Wednesday night.
Returning hitman Wayne Rooney missed a late penalty but his ninth minute strike proved decisive at Old Trafford.
In a gritty tie, Rooney, who was previously sidelined with a knee injury, turned home strike partner Javier Hernandez's square ball early on for his ninth goal of the season.
United piled on the pressure, as Nani had a volley brilliantly cleared off the line by Daniel Potts, while Alexander Buttner's low cross struck a post.
Hammers goalkeeper Jussi Jaaskelainen also did well to foil a header by Chris Smalling, and thwart a low shot from Rooney before the break.
The visitors improved after the interval, with the Red Devils lucky to survive a hand-ball appeal against Rafael.
Sir Alex Ferguson's men, though, had a great chance to make the game safe when Jordan Spence handled a cross by the impressive Ryan Giggs in the 78th minute.
Rooney, however, ballooned his spot-kick over the cross bar, although it would not prove costly as West Ham were unable to exploit the reprieve.