Tottenham manager Ange Postecoglou took full responsibility after his side suffered a 2-1 defeat to previously winless Ipswich Town in the Premier League.
Sammie Szmodics and Liam Delap gave Ipswich a 2-0 lead at the Tottenham Hotspur Stadium as Spurs fell short, despite Rodrigo Bentancur returning a goal in the second half.
It was Tottenham's third defeat in their last five matches across all competitions and leaves Postecoglou's side in 10th place in the Premier League with 16 points from 11 matches.
"It's hugely disappointing. We started slow and passively. We gave ourselves a mountain to climb. In the second half, we had chances but didn’t do enough to win the game," the Australian coach told BBC Sport after the game.
His side had also suffered a 3-2 defeat to Galatasaray in the Europa League on Thursday.
The hosts generated an xG of 1.82 on Sunday with five shots on target from 17 attempts, but were unable to take anything from the game.
"It's just down to me, I’m not getting consistent performances from the players. It’s something I need to address. I’m the person in charge, so that’s usually the way it goes. I take responsibility," said Postecoglou.
"We can’t give ourselves those kind of mountains to climb."
When asked about Ipswich's time-wasting tactics, Postecoglou said it is something his players will have to deal with.
"It seems to be the way the Premier League is going. Clubs are taking strategic time-outs. We just have to cop it. It’s up to the officials, not me," he said.