Inter Milan produced a remarkable comeback to defeat Napoli 3-2, with Lautaro Martínez netting a stoppage-time winner to keep their Serie A season perfect.

The reigning champions had found themselves two goals down before staging one of the most dramatic reversals of the early campaign, eventually snatching all three points in the dying moments of the match.

Martínez — Inter's captain and talisman — delivered when it mattered most, converting the decisive goal deep into added time to send the Inter faithful into raptures and hand Napoli a gut-wrenching defeat.

The result means Inter remain unbeaten in Serie A this season, with their perfect record intact heading into the weeks ahead.