The Derby della Lanterna was unable to separate Sampdoria and Genoa as they drew 1-1 in Serie A on Tuesday.
Genoa thumped Hellas Verona 5-2 on Sunday afternoon for their first win at the Luigi Ferraris stadium since December 7.
Genoa came out on top of an ill-tempered encounter with Lazio, triumphing 1-0 thanks to a Diego Perotti penalty.
Italy striker Alessandro Matri has sealed a return to Juventus on loan until the end of the season.
Roma's hopes of winning Serie A title faded further after a fourth consecutive draw, this time at home to Empoli.
Fiorentina claimed a 1-1 draw at 10-man Genoa on Saturday evening.