Samir Nasri scored on his return from injury as Manchester City FC overcame Chelsea FC to reach the FA Cup sixth round.
Stevan Jovetić steered a precise shot beyond Petr Čech to give Manuel Pellegrini's outfit the advantage in a tight, absorbing tie, but the tie was in the balance until the introduction of substitute Nasri midway through the second half. Moments after coming on for his first appearance in five weeks following a knee injury, the French midfielder combined with David Silva and knocked in City's second.
There was no way back for Chelsea, and City's dream of a unique quadruple remains on. The Citizens' League Cup final opponents, Sunderland AFC, are also enjoying a fine run in this competition. Gustavo Poyet's charges saw off in-form Southampton FC 1-0, Craig Gardner's sumptuous dipping strike at the start of the second period booking a place in the last eight.
Meanwhile, holders Wigan Athletic FC stunned Cardiff City FC 2-1. Ben Watson, the match-winner in the 2013 showpiece against City, got the vital goal with a superb free-kick after Fraizer Campbell had cancelled out Chris McCann's opener for second-tier Wigan.
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