Tottenham "didn't put in the effort" and need a "big wake-up call" after their defeat by Fulham at Craven Cottage, says captain Son Heung-min.
Knowing a win would take them back into the Premier League top four, Tottenham were well below par in a 3-0 loss.
Rodrigo Muniz scored either side of Sasa Lukic's strike while Spurs failed to find the net for the first time in the league under Ange Postecoglou.
"It is unacceptable, including me it was unacceptable," Son told Sky Sports.
"Everybody has to look in the mirror and say 'it is my fault'.