Since taking charge of Chelsea in the summer, Frank Lampard has introduced an attacking style of play that has brought excitement and entertainment to Stamford Bridge, progression to the Champions League knock-outs, and fourth place in the league, but for all the action, his tactics have clear weak points that rival managers are exploiting.

Individual errors didn't help in defeat to Everton and it took the help of VAR for Eddie Howe's side to take the three points on Saturday, but in almost every Chelsea game this season there have been passages of play that have exposed a consistent vulnerability in transition. Manchester United punished them at the start of the season, just as West Ham did in a 1-0 win last month using a tactical setup that Bournemouth borrowed ideas from for their first Premier League victory in six matches.

Chelsea play an aggressively high line designed to push their opponents deep into their own half. The centre-backs bring the ball to halfway and then try to fire passes through midfield to one of many players in space, something facilitated by Lampard's flexible system. They are not positionally rigid and this allows players to take up positions wherever they feel makes sense at the time.