The visibly angered St Johnstone manager Tommy Wright criticised his side after their 3-0 defeat to Aberdeen, insisting it was the worst performance he had seen in his four years in charge.

The visitors had changed formations in their 2-1 victory over Hamilton Accies last week, and continued with their new 3-5-2 formation against the Dons, but Wright insists that was not a factor in the defeat.

Adam Rooney netted a hat-trick for Aberdeen, scoring twice in the first half before adding a late penalty.

"Look at the goals we've conceded," he seethed. "A free-kick, the centre-backs drop deep. Three of them with one striker to look after. They don't do it. A corner kick. It's nothing to do with systems.

"When players don't pass the ball, don't work hard for each other, when they give a quality side time on the ball, that's what happens. You get grubbed. We were grubbed today.

"There's a lot of words I could use for that performance. It's probably the worst 45 minutes I've had in nearly 200 games here.

"There was a lack of everything. A lack of energy, a lack of quality. It was inept, not good enough, and they know about it. They know about it. That was nowhere near good enough.

"I'm taking nothing away from Aberdeen, but that was not good enough. None of them spoke in the dressing room so I take it they agree with me."