Manchester United boss Louis van Gaal explained abandoning his back three system for victory over QPR.
Van Gaal reverted to a back four and was rewarded with a 4-0 win.
"I could hardly play with five defenders because [Chris] Smalling and [Phil] Jones were injured it was difficult to play with three defenders. Tyler Blackett and Jonny Evans, maybe [Marcos] Rojo, can also play central defender. But then I have to play a left-footed player as a right-sided central defender.
"I don't think that was a good idea so I was more or less forced to play with two central defenders. But it is also due to the quality of the players that I change the formation."
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