West Ham boss Slaven Bilic admits he was embarrassed by his players after defeat at West Brom.
The Hammers arrived at The Hawthorns after conceding four goals without reply last weekend to lose 4-2 at home to Watford and West Brom, criticised by their supporters last season and so far this campaign for not being entertaining or scoring enough, found it equally simple to penetrate Bilic's men.
Bilic said: "It was one of those days. We've had a few at the start of the season and we have a problem.
"I don't like to hide behind mistakes, they happen, and I don't like to use the same language as I used after the game. But the key word is again - it's happened again.
"The defending is not as required in a league like the Premier League. You can't expect to get anything, make a comeback or anything like that, when you are 3-0 down at half-time - and then 4-0 down.
"It is a difficult spell and to be honest at half-time I felt embarrassed. At half-time it was a very bad feeling.
"We are weak and we have a problem. We have to act and solve the problem. I don't want us to react, I want us to act. We have a problem. It is no time to panic but we have to act.
"We need to be aware of the situation and I don't want to sound pessimistic, but I am and I have to live with this 24/7.
"The ball was in front of our goal after 10 seconds. It was not a chance but the ball was put across our goal, very dangerously. I mean, 10 seconds. It is a lack of awareness from the start, it's not even quality.
"You have to praise the opponent, of course, for what they are doing with the ball, and we could talk about Rondon's quality, or whoever, but it was also down to my players and at the moment we are not doing the basic things that were at the cornerstone of what we did last year."