Rui Vieira/Associated Press
It is always easy to call these things, from the comparative comfort of the front room and a thousand TV replays.
But even sat at Villa Park and without such luxuries, it was possible to see that the Wirral-based ref didn't have the greatest of games.
In seemingly allowing, then disallowing Nemanja Matic's goal, he caused confusion—as well as some consternation that the paltry matter of Branislav Ivanovic's armpit should carry the weight to nullify it.
In showing two yellow cards to the hapless, and largely blameless Willian, he besmirched an otherwise blameless performance with yet another of the red cards he so freely issues.
The late Ramires red was issued with a sounder case. But, by then, Foy had largely lost control of the game.
Conspiracy theorists abound—but the truth is that Foy often has a stinker, and it does't really matter who is playing.