FA Cup fourth round predictions: Chelsea to batter Bradford, Arsenal to breeze past Brighton, Emile Heskey to lose on Liverpool return, Aston Villa and West Ham to suffer upsets

Blackburn Rovers 0-2 Swansea City

Rovers have failed to score in their last two home games, while Swansea, who smashed six past Tranmere in round three, have found the net in their last six matches on the road.