Nigeria, Aug. 28 -- Manchester United manager Ruben Amorim has expressed dissatisfaction with his team's performance after their humiliating 12-11 penalty shootout defeat to fourth-tier Grimsby Town in the League Cup second round on Wednesday night.

United came from two goals down to force a draw, but the upset was sealed when Bryan Mbeumo smashed his decisive penalty against the bar, sending Blundell Park into wild celebration.

Beyond the result, Amorim delivered a brutal assessment of his players' attitude and execution as the lingering crisis at Old Trafford appears far from over.

"I know the best team won. The only team that was on the pitch. The best players lose," Amorim said, offering no defence for his side's lacklustre display...