Pep Guardiola joked he was 'a genius' after a double substitution kept Manchester City on Arsenal's tail in the Premier League title race.
Riyad Mahrez fired City to a 1-0 win at Chelsea to cut the deficit to the leaders back to five points. Less than three minutes after coming on as substitutes, Jack Grealish teed up Mahrez for the winner which keeps Arsenal firmly in their sights.
Guardiola had earlier sent on Rico Lewis and Manuel Akanji for Kyle Walker and Joao Cancelo in a bid to liven his side up following a lacklustre first half.