I know things are easily said when we lose but I’m just wondering why do we have Yates on the bench?

We normally have 2 strikers on pitch and 2 on bench, Ball, Smith,Lavery and Yates

It seems to me that Yates is last in line so why not leave him out and get maybe another defender on bench.

A waste if you ask me and it doesn’t help when we need to make changes