World Cup winner Lautaro Martinez scored the game's only goal as Inter Milan beat city rivals AC Milan at the San Siro. Thanks to the goal, Inter reinstated their second placed position with 13 points behind Serie A leaders Napoli, who won 3-0 at Spezia earlier in the day. Captain Martinez headed the only goal of the game from a corner by former Milan midfielder Hakan Calhanoglu. For Milan, pressure piled up on manager Stefano Pioli who's side dropped to sixth in Serie A this weekend, have lost five of their last six games in all competitions.