Arteta's side had lost their previous 12 league meetings with City before Martinelli's 86th minute strike deflected off Nathan Ake to spark wild celebrations at the Emirates Stadium
Arsenal have lost their grip on the title race after securing draws in their last three games, which has left them only five points above reigning champions City, having played two more games than Pep Guardiola's side
Arteta's side had lost their previous 12 league meetings with City before Martinelli's 86th minute strike deflected off Nathan Ake to spark wild celebrations at the Emirates Stadium
Arsenal have lost their grip on the title race after securing draws in their last three games, which has left them only five points above reigning champions City, having played two more games than Pep Guardiola's side