“The major change at Chelsea under Roberto Di Matteo has been the difference in the wide positions, stemming from a combination of the change of style, and the change of formation. Andre Villas-Boas wanted 4-3-3 and lots of pressing – therefore the job of the wide players was to close down the full-backs, and they defended high up the pitch. Villas-Boas then started playing with Juan Mata as a central playmaker, but the formation remained more 4-2-1-3 than 4-2-3-1 – a minor difference, but the wide players were still staying high up the pitch, even as Villas-Boas went from a heavy pressing game to something more cautious.” Zonal Marking