VIDEO: Martinelli celebrates after final whistle against Man City

Arsenal forward Gabriel Martinelli came off the bench to score the winner in a 1-0 victory and inflict back-to-back league defeats on Manchester City for the first time in five years.
Pep Guardiola's men usurped Arsenal in the second half of last season on their way to winning the treble of Premier League, FA Cup and Champions League.
Victory lifts the Gunners above the Sky Blus into second in the table and level on points with leaders Tottenham. Take a look at the Brazilian's celebration after giving his team the long-awaited victory.