A wonderful individual goal from Richie Partridge and a penalty from John Welsh sealed the victory for the Reds.
West Brom were unlucky to have had a player sent off just after half time, but never threatened to get back into the game.
Luzi, Otsemobor, Whitbread, Medjani, Henchoz, Diao, Welsh, Hamann, Foy (Gillespie), Partridge (Potter), Foley-Sheridan.
Subs not used: Harrison, Raven, Wright.