Harry Redknapp said he was convinced we'd go on and win after taking the lead against Sunderland on Tuesday night.
Instead, the Black Cats found a quick response to Rafa van der Vaart's opening goal as it ended 1-1 in the Premier League at the Lane.
The visitors had goalkeeper Craig Gordon to thank for a string of fine saves to deny Luka Modric, van der Vaart and David Bentley and when he was beaten, Tom Huddlestone's effort crashed against the crossbar and van der Vaart's header flashed inches wide.
We finally broke through after 64 minutes when half-time substitute Peter Crouch again set-up van der Vaart to finish from close range.
But Sunderland found an equaliser out of nothing just three minutes late, a goal that appeared to hit the team hard as chances were few and far between in the final 25 minutes.
"It's frustrating, of course," said Harry. "We dominated the game, created chances and once we got in front I really thought we'd go on and win the game.
"They didn't really have any shots before that but that's the way it goes. There's a mix-up and it all changes.
"I thought we played ever so well again and I couldn't fault the effort. All we can do is keep playing well. If we continue to play like that we'll be alright.
"We'll building a good team here and I like the way we play, I love to watch us play football. Some of the stuff we played in spells in the first half was fantastic.
"I was delighted with how we played but you don't always get the result you deserve. That's football."
Meanwhile, Harry revealed that Roman Pavlyuchenko came off at half-time with a back problem and that scans had revealed that Robbie Keane had suffered slight ligament damage in his ankle, but 'nothing too bad'.
In fact, Harry didn't rule Robbie out of being available for Saturday's home match against Blackburn.