Last-place Palermo and Genoa played to 0-0 in Saturday's lone Serie A match.
Palermo ended with 10 men when defender Salvatore Aronica picked up his second yellow card in the 76th minute at Palermo's Renzo Barbera Stadium.
Palermo moved within one point of Siena and Pescara, who occupy the two penultimate positions. Genoa was fourth from bottom, five points ahead of Siena and Pescara.
On Sunday, Serie A leader Juventus hosts Siena, and AC Milan faces Inter in the Milan derby.