Totally agree with this, and would add that the exact same thing applies to Lampard as well. I've seen some crazy posts here where people say all he does is stand in front of the goal waiting for tip-ins. What he's really doing is always, constantly, all the time putting himself in the right place just ahead of time (as opposed to right place right time). He knows what will happen and puts himself where that will be. That's why he's one of the best in the world, even now at the tail end of his career.TMac disappears? Why? Because he's not on the ball as much since Harrison and Lampard have become effective attacking options? Totally disagree with that statement. Tommy is constantly moving and making smart runs off the ball. PV said it best when he said he's always running to the right spot. You need guys like that who are willing to makes runs all game even though they might not get the ball. TMac drags defenders with him with all of his off the ball movement, and it opens up passing lanes for Pirlo as well as space for our two best attackers, Villa and Harrison. Tommy also doesn't get enough credit for his defensive positioning. He doesn't make a lot of tackles or interceptions but he's constantly tracking back and closing guys down and turning them laterally or backwards. That's the reason he's playing consistently, because he's doing exactly what PV wants him to do.
It is for those exact same reasons that I also disagree with Kjbert's post that Mix is invisible when he plays. Mix also does a ton of the same type of hard work off the ball. Things that may not actually show up in a stat sheet but are necessary to win games. I really hope they don't sell Mix because we are only a Lamps or Pirlo injury away from realizing how much we would miss him and need him in the center of the park.
I really don't understand a lot of the complaints about our midfielders. Pirlo, Lampard, Mix, McNamara, all four of them are *supposed* to be the second line, not the first line. Villa makes the flashy plays, sure, but that's his job. Our midfielders support the front line and supplement the back line. That's why they're in the middle. Their job is to work hard and set up our attackers (with the occasional attack of their own, of course).