Kerim Alajbegovic and Jérémie Boga scored stunning second-half goals as Juventus beat 10-man Napoli 2-0 at the Allianz Stadium to ease the pressure on head coach Luciano Spalletti.

Juve, who had won only one of their four previous Serie A matches, had been jeered by their own fans earlier in the second period before Bosnian teenager Alajbegovic and Boga both struck with long-range efforts.

Napoli, who slipped to their fourth league defeat of the season, had defender Luca Marianucci sent off soon after Juve's opener for his second yellow card.

(Photo by Marco Bertorello / AFP via Getty Images)

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Napoli went close to taking an early lead as Lorenzo Lucca's early diving header was brilliantly saved by Juve goalkeeper Guglielmo Vicario.

Juve's first chance was blazed over the crossbar by Jhon Lucumí in the 16th minute and they went closer soon after when Colombia defender Juan Cabal's close-range effort hit a post.

Both sides continued to create chances before the break, but lacked quality in front of goal.

Scoring chances at both ends dried up after the restart and there were whistles and jeers from the home fans after Randal Kolo Muani's misplaced pass.

Juve skipper Bremer headed Douglas Luiz's cross straight at Alex Meret before Alajbegovic's first Serie A goal gave Juve supporters something to cheer as he slammed a 20-yard shot into the top corner.

Napoli were dealt a further blow five minutes later when centre-half Marianucci received his second yellow card for his rash challenge on Cabal.

And it got worse for the visitors when Boga, an earlier replacement for Alajbegovic, cut in from the left and curled a superb finish into the far corner.