.Manchester City moved above opponents Southampton into second place as three second-half goals cut Chelsea’s Premier League lead to six points.
Sergio Aguero, in his 100th top-flight game, pulled the ball back for Yaya Toure to drill in a low strike.
City played the final 16 minutes with 10 men after Eliaquim Mangala saw red.
But Frank Lampard’s strike and a close-range finish from Gael Clichy saw City clinch their third straight win as Saints suffered a first home defeat.