Ryan Giggs says the Reds were relieved to see Dimitar Berbatov strike a second half killer blow during the Boxing Day win over Sunderland after the Reds had initially threatened to run riot.
Sir Alex's men had taken a 5th-minute lead through the Bulgarian striker who headed home Wayne Rooney's cross at the far post. A second goal looked inevitable before the break as the Reds piled forward in numbers, but were denied by the woodwork (twice) and Sunderland stopper Craig Gordon who saved well from Rooney and Ryan Giggs in quick succession.
United had to wait until just before the hour-mark to double their advantage and effectively kill off any hope the depleted Black Cats had of stealing something.
"You're always a bit nervy when you're up against a very good Sunderland team and it's only 1-0, but once we got that second goal it was comfortable," Giggs told MUTV.