AC Milan fullback Davide Calabria admits they weren't at their best in defeat to Roma.
Roma won 1-0 in the first-leg of their Europa League quarterfinal thanks to Gianluca Mancini's winner.
Calabria told Sky Italia: "We were missing something, they were better at dribbling.
"We had some difficulty understanding how to go after them. A negative first half, then in the second half we reacted.
"There are still 90 minutes and nothing is lost."