The Giallorossi failed to put away a host of chances as they relinquished top spot in Serie A, and their coach has demanded improvements.
Rudi Garcia wants Roma to become more ruthless in front of goal following his side's 1-0 defeat to Inter on Saturday that saw its host overtake the club in Serie A.
Nerazzurri goalkeeper Samir Handanovic was in inspired form, forcing Edin Dzeko to endure his ninth consecutive outing in all competitions without failing to find the net for the capital outfit.
Miralem Pjanic - who received his marching orders in the second half - and Mohamed Salah were also denied by the custodian as Roma succumbed to Gary Medel's match-winning effort.