A goal in each half earned 10-man AC Milan a 2-0 victory at Benevento in Serie A which propelled them back to the top of the standings on Sunday.
City rivals Inter Milan had thrashed Crotone 6-2 to go top earlier on Sunday, but Milan soon found themselves in front in Campania thanks to Franck Kessie's 15th-minute penalty.
Milan's task was made all the more difficult after Sandro Tonali was sent off in the 33rd minute following a VAR review. The referee had initially shown the midfielder a yellow card for a dangerous tackle but changed it to red after consulting the pitch-side monitor.
Rafael Leao made it 2-0 four minutes into the second half, while the hosts missed a penalty.
Milan remain unbeaten and have 37 points from 15 games, one ahead of Inter, while Benevento stay 10th.