When Adams switched formations in December and used two number 10's the two full backs had to supply the width, especially in home games. Fox played almost as a third centre back and rarely moved from the centre of the pitch.
The problem with this new formation was that there was acres of space behind Sawyer and Threlkeld which the opposition would target and attack.
It was ok on the right side because Threlkeld had the youth and energy to get up and down the pitch and was helped by the pace of Vyner who would come across and cover. But on the left side it didn't really work because Sawyer didn't have the pace to get back which meant Bradley had to come across, our best defender and best header of the ball was now out of position covering for Sawyer.
Opposition teams did this frequently once our new formation was understood.
It's not Sawyer's fault, I think he's the best crosser of the ball in the squad, so if Adams plays the same way next season we need a younger, pacier and more energetic left back.