Juventus must wait to claim a ninth successive Serie A title after they slumped to a shock 2-1 defeat at lowly Udinese.
The win left Juventus with 75 points from 30 games, seven ahead of second-placed Lazio who suffered a 3-0 loss to AC Milan at home.
Cristiano Ronaldo scored one and set up another two, with Paulo Dybala, Gonzalo Higuain and Matthijs de Light also on target for Juventus.
Juventus, with 66 points from 27 games and chasing a ninth successive title, extended their lead to four points over Lazio, who visit Atalanta on Wednesday.
It is hoped that Serie A fixtures could resume between May 27 and June 2 -- with an end date for the season of early August. However, no formal date has been announced for the resumption of the league, even before empty stands.
Dybala is one of three players at Juventus who have tested positive for the virus alongside defender Daniele Rugani and midfielder Blaise Matuidi, a World Cup- winner with France in 2018. Players at other Serie A clubs have also tested positive.
He is the third player at the club, one of the biggest in Europa and Italy's most successful in domestic terms, to test positive after midfielder Blaise Matuidi, a World Cup winner with France in 2018, and defender Daniele Rugani.
The Turin side, with 13 points from five games, made sure of winning Group D with one match to spare.
The game was peppered with 10 yellow cards but with both teams missing key players and fielding experimental line-ups neither was able to break the deadlock.