Sampdoria advanced with a goal scored by great striker Fabio Quagliarella in the 57th minute.
Two minutes later, his colleague, Adrian Silva, was dismissed after receiving the 2 warning.
Milan was able to take advantage of its numerical advantage and snatched the equalizing goal in the 87th minute by Jens Peter Howe to escape defeat at home.
Sampdoria raised its score to thirty-six points in the 10th place. The Rossoneri also raised his score to 60 points in 2nd place.
Inter can strengthen their position at the top and enable them to come close to clinching the title.
In the event that he beats his rival, Bologna, in the match between the two teams today in the same stage, and Inter Milan has a postponed match.
Match lineup for Milan and Sampdoria
Milan coach Andrea Pioli entered the match with a tactical drawing 4-5-1.
With Donnarumma participating in the goalkeeping.
Simone Kier, Theo Hernandez, Tomori and Alexis Salimaekers participated.
In the whiskey line are Frank Casey, Ismail bin Nasser, Hakan, Kastenjo and Kronich.
As for the attack, Sultan Zlatan Ibrahimovic participated alone in the front line.
Sampdoria coach Claudio Ranieri entered the match 4-4-2.
Emil Odero participated in goalkeeping, as well as in defense, Berezinsky, Tonelli, Omar Collier and Ogilo.
In the midfield are Candriva, Torcy, Andre Silva and Damsgaard, and in front are Galladrini and Quagliarella.
The Rossoneri suffered a strong blow in the face by drawing today, for moving away from the lead by 5 points from Inter Milan.
Inter Milan are top with 65 and two games less than Milan.
Today, Inter Milan faces Bologna, in a match in which they seek to move further into the lead and get closer to the title.
In the same round shortly after, Juventus will face Turin Club in the Turin derby.
Juventus are seeking to win against Turin to improve their position in the La Liga standings table for this season.
And he is counting a lot on his star, Cristiano Ronaldo, to get closer to the top.