There are players that do the dirty work of course and every team has one, but they do real dirty work, not just running around for 90 minutes like headless chickens. They put in fair amount of tackles, recuperate balls, win duels all around the pitch and so on... As for Marchisio last night, little fellow had 1 duel won and 1 interception, so besides running up and down to close that right side he did nothing what most of other players couldn't do in that position.