MILAN (Reuters) -Substitute Romelu Lukaku grabbed an 86th-minute goal to earn Inter Milan a 1-0 victory over Porto in a tight first leg of their Champions League last-16 tie on Wednesday.
Porto midfielder Otavio was sent off after receiving a second yellow card 12 minutes from time and Belgian striker Lukaku took full advantage to give his side a narrow advantage to take to Portugal next month.
Lautaro Martinez could have put Inter ahead after 13 minutes but sent his header wide from an unmarked position inside the box.
Inter keeper Andre Onana pulled off a good stop to keep out an effort from Marko Grujic who was played free inside the box by a backheel pass from Mehdi Taremi.
Alessandro Bastoni was close to giving Inter the lead in first-half stoppage time, but his downward header was expertly saved by Porto keeper Diogo Costa.
After Otavio's dismissal following a poor challenge on Hakan Calhanoglu, Inter poured forward in search of the winner and Lukaku headed Nicolo Barella's cross against the post before knocking the rebound past Costa.
The win ended Inter's run of four successive first-leg defeats in Champions League knockout-stage ties and sent the home crowd into raptures as they chanted the name of Lukaku who has endured an injury-plagued campaign.
Porto host Inter in the second leg on March 14.
(Reporting by Tommy Lund in Gdansk, editing by Ed Osmond)