Milan played their second consecutive goalless draw, as Torino and Bremer slammed the door shut, leaving the Scudetto race wide open.
The pressure was on the Rossoneri after Inter won and Napoli lost 3-2 at home to Fiorentina, so a victory here would send them four points clear at the top of the table. Instead, Inter are now within two points and have a game in hand.
Zlatan Ibrahimovic, Ismael Bennacer, Samu Castillejo and Ante Rebic were late additions to the injury list, joining Alessandro Florenzi, Alessio Romagnoli and Simon Kjaer. Toro had Tommaso Pobega back from his ban, but Rolando Mandragora, Dennis Praet, Antonio Sanabria, Koffi Djidji, Simone Zaza and Mohamed Fares missed out.
Davide Calabria forced a save at full stretch from Etrit Berisha and Alexis Saelemaekers went down too easily under pressure from Samuele Ricci.
Ricci was involved at the other end too, sent clear by a great passing move only to fire wide of the near post.
After the restart, Mike Maignan made a sensational flying save to fingertip Mergim Vojvoda’s strike out of the near top corner.
Bremer was the usual rock in defence, making the block both on Leao after a strong run and the Tonali follow-up.
Belotti thought he’d scored after a sensational first touch to control a ball over the top, but Fikayo Tomori got in the way for a decisive deflection wide.
Tonali turned Ricci with a great first touch on the Junior Messias pass, but Berisha got just enough on the save to take the sting out.
Belotti hit the side-netting after springing the offside trap and Maignan dealt with a Pietro Pellegri attempt.
Alessandro Buongiorno flung himself in the way of a Messias curler from the edge of the area, then Bremer made an absolutely sensational tackle on Messias in stoppages from 12 yards.
Having already taken points off Inter in recent weeks, Toro did the same with Milan.
Torino 0-0 Milan