As leagues across Europe take a winter break, the Premier League revs into its most manic period. With matches over the weekend followed up with a Boxing Day smorgasbord, the fixtures now come thicker and faster before and after New Year.
It is at this time that squad depth is pushed to its very limit, a time when a team aspiring to the Premier League can be undone by injuries or suspensions in key positions that affect so many games in such a short period of time.
Goal takes a look at how the 'Big Six' compare in terms of strength in depth. Is there enough quality in each team's second-string XI to rotate and still compete?