Aim
To train the zonal back 4
Numbers
.2 teams (Goalkeeper / back 4 / 3 attackers) + 2 neutral midfield players (who play for the team in possession)
Area
.Full pitch
The start
.The coach feeds the ball to either goalkeeper
.The back 4 of the team in possession spread out and try to take possession from the goalkeeper (the opposition front 3 press)
.The back players try to deliver to the midfield
.Once in possession and without pressure, the midfielders combine (1/2, overlap etc.) before feeding the attackers
.The midfielders then support the attackers from behind 
The defending back 4
Work on:
.Distance from halfway line when opposition goalkeeper has the ball
.Distance from each other when midfield has the ball
.Distance between goalkeeper and back 4
.Flowing as a unit across the field in response to the movement of the ball
.Distance and shape of back line as attack is built (middle and wide)
.Defending in the last third against central and wide attacks
Options
.Midfielders can run at the back 4 with the ball
.Defenders and midfielders can combine and change roles
.Full-backs can overlap and support the attack
.An extra forward can be added to each team.