Blackwell's 54-ball half-century threatened to turn the tide but thevisitors remained favourites when Hoggard had the left-hander caught behind for 64, prodding at a good length ball.
And within a minute, thevisitors were behind when Bessone's left-hand cross at the other end found Pratley at the near post to volley home his second of the game and put the Swans back in front.
Raffaele Palladino made it 3-0 from the spot, while thevisitors ended the game with nine men when Fabrizio Cacciatore was red-carded with two minutes left as tempers flared.