Manchester City moved up to second in the Premier League table as Arsenal squandered a lead to lose for the second successive game. Theo Walcott's cool fifth-minute finish from Alexis Sanchez's pass put the Gunners in control at the interval - but the second half brought a familiar painful fate for manager Arsene Wenger and his players. As at Everton on Tuesday, they were overpowered and the credits were rolling once Leroy Sane ran on to David Silva's pass to beat Petr Cech with Arsenal appealing in vain for offside.