Mahrez and Grealish unlock Chelsea as City close gap on Arsenal

The champions earned a crucial victory thanks to two of Pep Guardiola's subs.

BACK STICK: Riyad Mahrez of Manchester City celebrates after scoring his side's winner. Picture: Ryan Pierse/Getty Images

Pep Guardiola shuffled his pack, introducing Riyad Mahrez to secure the victory that moved his Manchester City back to within five points of Premier League leaders Arsenal.

Yet while the City manager was able to engineer victory by a making decisive changes from the bench, the meeting highlighted the growing problems confronting Graham Potter as he attempts to restore a degree of momentum to Chelsea’s season and restore their challenge for a top-four place.