Nicolas Nkoulou headed struggling Torino ahead in the 15th minute and the Cameroon defender celebrated the first Serie A goal since the restart by taking a knee in support of the Black Lives Matter movement.
Torino's shirts had the words "Thank you to all the heroes" printed under the badge as a tribute to Italy's health workers and, as with all Italian matches for the time being, the game was played behind closed doors.
The match was originally due to be played on Feb. 23 but became one of the first to be called off as the coronavirus began to spread through Italy. Serie A was eventually suspended just over two weeks later.
Belotti has been stuck on nine league goals since his brace against AS Roma on Jan. 5.
Both sides tired towards the end as the effects of the long break began to show although the hosts kept pressing for a winner but without creating many openings.