This match hinged on one decision, make no mistake. A call that was horribly wrong, and could have wide-ranging implications on Everton's Premier League survival.
You can talk all you want about defensive errors for Brentford's goals at Goodison Park and you'd be absolutely right, to be fair. The Blues could have acted differently in every situation to keep the ball out of the back of the net.
But, they were only on the back foot so heavily because they were reduced to ten men. That's also an indisputable fact of this loss.