Manuel Pasqual scored the only goal as Fiorentina moved up to fifth in Serie A by edging out struggling Genoa.
Pasqual's 14th-minute strike gave the visitor a lead it never surrendered in a fiery clash that saw eight players booked.
Genoa's recent woes show no sign of ending however, as it slumped to its third successive defeat.
Luigi Del Neri has failed to deliver a point since taking charge of Genoa 11 days ago and will be champing at the bit to have star striker Marco Borriello back.
La Viola, however, broke its Ligurian curse with a first win at Genoa in 30 years and its fifth victory of the season has moved it to within one point of fourth-placed Lazio.
But it opened the scoring through an unlikely source in the 14th minute with its first attempt at goal.
Veteran left-back Pasqual had not scored since February 2011 but his exquisite lob from Gonzalo Rodriguez's inch-perfect pass left Genoa goalkeeper Sebastien Frey with no chance.
The host nearly hit back immediately afterwards through Juraj Kucka, whose shot from just outside the area was just too high while Mario Sampirisi forced a fine save from Emiliano Viviano.
Fiorentina was not content to sit on its lead and after the interval Frey was on hand to thwart Adem Ljajic's goalbound effort.
At the other end Daniel Tozser was denied by Viviano while the Hungarian fired over in the closing stages as La Viola hung on.
Socceroos midfielder Carl Valeri will play Serie A football for the first time after Sassuolo claimed a maiden Serie B title with a 1-0 victory over third place Livorno.