It was Juventus' fourth Coppa Italia triumph in as many years and while they won it comfortably in the end, it may have been much closer without Donnarumma's mishaps.
And Gattuso was coy when asked about Donnarumma - who has been linked with the likes of Paris Saint-Germain and Real Madrid - following Wednesday's 4-0 loss to Juventus in the Coppa Italia final.
Juve are also in pole position to capture a seventh consecutive Serie A title, needing just a point from their final two matches to win the Italian league for the 34th time in their history.
Pogba on-pitch clash: West Ham's Mark Noble reacts
The pair clashed during Thursday's 0-0 draw between the Hammers and Manchester United at Wembley. Mourinho's men were again below par just over a week before their FA Cup final with Chelsea .
And former AC Milan midfielder Gattuso conceded he felt huge pressure as he bids for his first coaching title after taking over last November.
The lead was doubled on 61 minutes as Douglas Costa's strike was spilled into the net Donnarumma, who should have done better with the effort.
Buffon made an early save off Patrick Cutrone minutes into the game with Costa and Paulo Dybala both testing Donnarumma.
North Korea to finish dismantling nuclear test site 'within two weeks'
In developing a plan to denuclearize North Korea disarmament experts would look to several successful precedents. DPRK is the acronym for the Democratic People's Republic of Korea, North Korea's official name.
Gattuso ran onto the pitch to calm down his players.
From the resulting corner, Benatia got away from his marker and stooped to head Juve in front after 56 minutes.
An own goal by substitute Nikola Kalinic completed a calamitous defensive display by Milan. "We have a winning mentality", said Benatia, who had come in for criticism after letting in Kalidou Koulibaly's goal in a 1-0 defeat to Napoli two weeks ago. This one will hurt Milan as they started off well but could not finished the job in the second half.
Connor Hellebuyck: Preparing for Golden Knights
The Jets are one of the fastest starting teams in the National Hockey League with a plus-25 goal differential in the first period. Airlines are adding extra flights, fares are soaring and Jets fans are stealing off to Sin City next week to cheer on their team.
Would you like to place a soccer bet?