AC Milan's woeful start to the season got worse as it fell to a 2-1 defeat at struggling Udinese in Serie A.
The 4-1 win over Udinese extended Juventus' unbeaten streak in the Italian league to 41 matches.
Udinese is now in pole position to claim Italy's last Champions League place.
Juventus have just a one-point lead over AC Milan, with two rounds of matches remaining.
Undefeated Juventus moved a step closer to the Italian league title with a 4-0 rout at Novara.
With four rounds remaining in Serie A, Juve have a three-point lead over defending champions AC Milan.
Napoli revived their chances of returning to the Champions League with a 2-0 win over Novara.
On-loan Livorno midfielder Piermario Morosini collapsed and died after suffering a cardiac arrest during a Serie B match at Pescara.
The Italian football federation called off all league games this weekend after the death of Livorno midfielder Piermario Morosini.
Livorno midfielder Piermario Morosini collapsed and died during his side's Serie B meeting with Pescara.
Milan slumped to a 1-1 draw at Catania last weekend, allowing Juventus to draw within two points with eight rounds remaining in Serie A.
Milan and Juve have now played the same number of games and Milan hold a two-point lead with 12 rounds remaining.
Inter, who have now not scored in five successive games, crashed to their seventh loss in eight matches.
Ajax beat Man United 2-1 at Old Trafford but the Red Devils are through to the next round on aggregate.
AC Milan turn their attention back to Serie A following a dominant Champions League victory against Arsenal.
With Juventus' game at Bologna postponed, Milan end the weekend two points clear of the Turin side.
AC Milan have not won in their last three games, and travel to Udinese on Saturday.
Milan - and indeed Italy in general - is experiencing some of its worst weather in nearly 30 years.
Matri scored either side of Antonio Floro Flores' equalizer as Juventus stayed unbeaten in Serie A.
Juventus is unbeaten but holds only a one-point lead over defending champion AC Milan.