Dries Mertens scored a hat-trick as Napoli thrashed Bologna to keep alive their slim hopes of winning Serie A.

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Manolo Gabbiadini scored twice, while David Lopez added the sixth, in a win which cuts Juventus' lead at the top to six points for 24 hours at least.

Had Napoli lost, Juve could have won a fifth straight title with victory over Lazio on Wednesday.

Victory, achieved without suspended top scorer Gonzalo Higuain, moves Napoli eight points clear of Roma in third.

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Only the league's top two sides will qualify automatically for next season's Champions League, with the third-placed side having to negotiate a play-off.