Tottenham boss Harry Redknapp admits Sunday's defeat against Manchester United was hard to swallow after dominating large periods of the game.
Spurs took control in the first half at White Hart Lane only to go behind to a Wayne Rooney header on the stroke of half-time.
Ashley Young then added a superb double after the break and the hosts could only reply with a consolation strike from substitute Jermain Defoe.
Redknapp was at a loss to understand how they had lost despite being on top for most of the encounter.
He told Sky Sports: "I couldn't believe we came in 1-0 down. It was everything we worked on during the week, Jake Livermore and Sandro were top class. Really there was only one team who should have been in front at half-time and we came in 1-0 down.
"I couldn't have asked more from the players. Sometimes you need the luck and we didn't get any today.
"There was nothing much we could change, the two lads (Livermore and Sandro) dominated against (Paul) Scholes and (Michael) Carrick. We just needed a break but when you're 2-0 down thinking you have bossed the game, mentally it's difficult."
Spurs striker Emmanuel Adebayor saw a goal disallowed in the first half after he was adjudged to have handled in the build-up by referee Martin Atkinson.
Asked about the incident, Redknapp added: "I thought it was a bit harsh, we had the same type of goal against Stevenage (disallowed) when the ball hit Scott Parker (who was ruled offside). I thought it could have counted but it was not to be."
Redknapp insists the mood is still upbeat at the club and is determined Spurs will end the season in third place, which carries automatic qualification for the UEFA Champions League group stage.
"We had a meeting on Friday and I said they had been a credit all season. We've been on an incredible run and just had a blip last weekend against Arsenal," he added.
"I want to finish third, I want to finish above Arsenal and Chelsea. That's what we're capable of doing and that's where I want us to be."