Inter Milan moved 18 points clear at the top of Serie A after a narrow win at Champions League-chasing Bologna.
German centre-back Yann Bisseck stooped to head in the only goal of the game from Alessandro Bastoni's cross eight minutes before the break.
A 12th consecutive win in all competitions extends Inter's lead before Juventus' home game with Atalanta on Sunday (17:00 GMT).
Bologna stay fourth after just their second home defeat of the season.
The hosts dominated much of the second half but could not find a way through Simone Inzaghi's side, who have conceded just 13 goals in 28 league games.
Victory is Inter's 10th in a row in the league, only the third time they have achieved that feat in their history, as they continue their march towards a 20th Serie A title.
Meanwhile, fifth-placed Roma have the chance to cut the gap to Bologna to one point at Fiorentina on Sunday evening (19:45).
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