MILAN (Reuters) - Third-placed AC Milan were held to a 1-1 draw by Atalanta after Teun Koopmeiners' penalty cancelled out Rafael Leao's superb early opener for the hosts in Serie A on Sunday.

Leao broke the deadlock in the third minute, capping a solo run with a stunning shot into the top corner from a tight angle.

But Atalanta levelled against the run of play from the spot shortly before the break as Koopmeiners sent Mike Maignan the wrong way after a penalty awarded for Olivier Giroud's foul.

Milan remain third on 53 points from 26 games, four points off second-placed Juventus and 13 adrift of leaders Inter Milan, who won 4-0 at Lecce earlier on Sunday and have a game in hand.

Atalanta, with one more game to play than the teams immediately above them, are fifth with 46 points, two behind Bologna in fourth.

(Reporting by Anita Kobylinska in Gdansk; Editing by Ken Ferris)