Wing back towards middle
A wingback using this order boosts the central defence rating, at the expense of side defence. In addition the wingback will contribute far less to the wing attack rating on its side.
Traditionally, this order was widely regarded as useless, but after the game engine changes of seasons 27-28, wingback towards middle now has its place. It is particularly useful against teams that use the AIM order, whilst largely abandoning their wing attacks.
WBTM and the Wing Attack Rating
A WBTM uses their wing skill to contribute to the Wing Attack rating on their side of the field just like any Wingback. However that skill is reduced. It is like you are playing with slightly less than 1/2 a Central Defender and slightly less than 1/2 a Normal Wingback (who contribute to wing attack). This has serious consequences for your wing defence rating on the side where you play your WBTM: your side defence rating for that side will significantly fall.
The wingskill of the WBTM should also be taken into consideration for maximum efficiency of the player. They are like a Normal Wingback in that their defensive contribution on the wing is slightly less than and their wingskill contribution is greater than hypothetically half a Defensive Wingback.