Jose Mourinho and Chelsea have been dumped out of the League Cup at the hands of relegation threatened Sunderland, after being taken to extra time by the Black Cats.
Following a goalless first half in the north of England, it was Frank Lampard who put the Blues ahead, bundling over a cross from Cesar Azpiliacueta.
The Sunderland keeper did claw the ball back out but the new goal line technology worked a charm as the referee instantly allowed the goal to stand despite the protests from Sunderland.
But despite their slender lead, Chelsea never looked in complete control. New arrival Samuel Eto'o had the chance to make it two for Chelsea and put daylight between the two teams, but screwed his shot wide when put through on goal.
And that miss was to prove costly when Sunderland forced an equaliser through Fabio Borini. The on-loan Liverpool striker appeared from the bench again and was on hand to net another important goal for Gus Poyet. He followed the ball in at the back post before slamming the ball hard and low into Mark Schwazer's goal.
The resulting period of extra time saw both teams take the game to each other, forcing both keepers into vital saves throughout the additional 30 minutes. With players tiring, there was space to exploit for both teams, but it was Sunderland who made the most of it.
Fellow loan signing Ki Sung-Yueng took his time in the box to give himself some shooting space, and fired low to Schwarzer's right to send the Stadium of Light into a frenzy.
Having had a good record in the League Cup before the game, Mourinho would have been desperate to continue that run and see Chelsea into the semi-Finals.
But instead he is left to ponder what he must do to ensure some goals from his current strikers, having seen veteran midfielder Lampard score his side's only goal despite their chances.
For Poyet and Sunderland, it is a much-needed win and one that could boost the Black Cats ahead of their relegation fight.
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