Rideout hit the post before Liverpool briefly threatened to get back into the tie with a spell of pressure .
The substitute had the rub of the green on 88 minutes , dispatching past James and sealing the win .
Rideout hit the post before Liverpool briefly threatened to get back into the tie with a spell of pressure , but the substitute had the rub of the green on 88 minutes , dispatching past James and sealing the win .