London - Burnley strolled into the fourth round of the FA Cup after they dominated in a 2-0 victory over a lackluster Sunderland in Tuesday's third-round replay at Turf Moor.
The hosts started brightly and were nearly rewarded in the fifth minute when Vokes headed just inches wide after Jeff Hendrick's accurate delivery from a free-kick in the fifth minute.
The Black Cats were struggling to get into the contest and Barton nearly made it 1-0 when his strike was well saved by Mannone before Javier Manquillo hooked it clear in the 11th minute.
The visitors were not at the races in the opening period as Burnley's relentless work rate kept them pinned back in their own half.
Eventually the Clarets hit the front just before the break when Vokes headed home Tendayi Darikwa's accurate cross in the 44th minute.
David Moyes' men had hardly threatened in the opening 45 minutes although Sebastian Larsson did get a strike away after the interval that went just over the bar.
Vokes had a chance to make it 2-0 in the 55th minute when he was put through by Steven Defour. However, Jason Denayer denied him with a last-ditch block.
The momentum stayed with the home team in the second period and Gray made it safe in the 83rd minute when he finished clinically past Mannone from Boyd's knockdown.