Napoli attacker Marek Hamsik admits they're facing a must-win game against Juventus.

The Azzurri missed the chance to reign in Juve after their draw with Udinese.

"Udinese is always a difficult place," he told Sky Sport Italia. "We certainly put maximum effort into the game and only just missed getting a goal.

"The game with Juve will be very important. It is crucial for us to get a result."