AC Milan drew 0-0 at home to Lazio in the first leg of their Coppa Italia semifinal on Wednesday and could be left counting the cost of an embarrassing miss by Hakan Calhanoglu.
Lazio goalkeeper Thomas Strakosha pulled off a great save to keep out a Patrick Cutrone header in the 75th minute and Calhanoglu seemed certain to score from the follow-up but the Turkey midfielder blazed over an empty net.
Cutrone had controversially scored in Milan's 2-1 win in the league on Sunday as the Video Assistant Referee failed to spot the ball had come off the teenager's arm and not his head.
The league's top goalscorer, Ciro Immobile, was back from injury and thought he had given Lazio the lead shortly after the hour -- only for Gianluigi Donnarumma to pull off a spectacular save to keep out his header from Jordan Lukaku's pinpoint cross.
The second leg will be held at Rome's Stadio Olimpico on Feb. 28.
Lazio have reached the final in three of the past five years, winning in 2013. They were beaten in 2015 and 2017 by Juventus, who also beat Milan in 2016.
Juventus beat Atalanta 1-0 in the first leg of the other semifinal on Tuesday.