Roma won for the first time in three Serie A matches as they defeated Spezia on Monday.
Chris Smalling headed Roma ahead when he converted after Tammy Abraham's earlier header following a corner.
Abraham later hit the crossbar before Roger Ibanez added a second goal after 10 minutes of the second half.
But Roma, who move up to sixth, ended the game with 10 men when substitute Felix Afena-Gyan was shown a second yellow card late on after a handball.
Roma had suffered successive league defeats - against Bologna and Inter Milan - earlier this month.
After 17 matches, Jose Mourinho's men are 12 points behind Serie A leaders Inter and play at third-placed Atalanta on Saturday.
