Heading into the tie the Black Cats were given little hope of achieving a result against Jose Mourinho’s high-flying Blues, but Ki Sung-Yueng’s extra time effort handed Gus Poyet, arguably, his most impressive scoreline since taking charge of the North East side.
A mixture of Frank Lampard and Lee Cattermole handed the traveling side the lead, as the Chelsea man diverted the ball goalwards before the Sunderland midfielder’s attempted block was insufficient to keep the scores level as the ball crossed the line.
Then came the drama. On-loan Fabio Borini – a former Stamford Bridge player – levelled the scores on 88 minutes with a composed finish after Jozy Altidore kept the ball alive in the Chelsea penalty area. The equaliser set up extra time, and just as the game looked to be heading for a penalty shoot out, Ki netted a cool winner to send the home supporters into a state of euphoria.
Elsewhere Manchester City booked their spot on the semi-final draw with a routine 3-1 win over Leicester. Aleksandar Kolarov opened the scoring with a fine effort before Edin Dzeko – who was handed a rare start – added two either side of half-time. Lloyd Dyer pulled one back on 77 minutes, but was unable to set up a memorable comeback for the Foxes.