Indeed. The main benefit of Sissoko playing further forward allows the midfield to play a pressing game on the opposition further up the field. Inevitably, many of our opponents either lose the ball higher up the pitch or try to pass around Sissoko, this is where Xabi excels, as he reads the game so well he is able to intercept and direct the play with more space. If Alonso has the ball further forward, he is not able to use his full passing range to its full potential, as there is less room to direct the tempo and play. One of our most successful tactics has been for Alonso to spread the ball wide, and at pace, from just inside the opponents half. This really stretches teams if our wide players are offering width. With good movement from our team, Alonso has the passing range and skills to find them. Benitez organises the team as he can see Sissoko and Alonso's strengths and weaknesses. Playing Sissoko deeper would invite more pressure on us, as it is fairly easy to by-pass Alonso with a one-two or with pace. As mentioned, Sissoko's natural game is to chase and harrass opponents and to play a holding midfield role would mean that he would be required to be more disciplined in his positioning, which is not his absolute strength.