The Atalanta shotstopper looked nervous when dealing with Balotelli's free kicks and will be relieved that his defence prevented him from being regularly tested.
A superb display from the on-loan Parma defender who stuck to Balotelli tightly and made several crucial blocks and tackles.
The 26-year-old was solid in defence and assisted the attack excellently by regularly getting forward and delivering dangerous crosses into the box.
Although he turned the ball into his own net for Milan's opener, he organised the defence brilliantly and limited the shots to Consigli's goal.
The 24-year-old showed some brilliant touches in midfield and was heavily involved in the majority of Atalanta's attacking moves.
A brilliant box-to-box performance from Cigarini who looked tidy in possession and tested the Milan defence with several inviting set-pieces, though his deliveries ultimately produced little end product.
The Argentine proved a handful in midfield and created a number of goalscoring opportunities with his clever footwork and good link-up play.
The Chile international functioned as an effective link between the midfield and attack, though he was culpable for spurning Atalanta's best chances in the first half. Won the penalty which Denis converted.
Struggled with the pace of El Shaarawy in the second half but, on the whole, he performed astutely in an unfamiliar right-back role.
A tireless performance from Baselli, who pressed Milan high up the pitch and allowed the likes of Kaka and Honda little time to settle on the ball and pick their passes.
The Argentine forward caused the Milan defence all sorts of problems with his aerial prowess and strength, and just when his scoring touch seemed to have deserted him, he netted the equaliser from the spot.
Deputised well in Abbiati's absence but could do nothing to prevent either of the Atalanta goals.
The Frenchman nearly saw red midway through the second half and struggled to deal with the aerial prowess of Denis.
Aside from one blunder which nearly gifted Atalanta a goal, he looked assured in defence and made a number of crucial headers and interceptions.
M. De Sciglio
The 21-year-old was rarely exposed defensively but failed to get forward and assist the attack as regularly as Seedorf would have liked.
The Japan international struggled to deal with Atalanta's quick pressing game and carelessly gave away possession on several occasions. Was unsuprisingly withdrawn at half-time.
N. de Jong
The Dutchman patrolled the midfield brilliantly for Milan and gave excellent protection to the back four with his stamina, tackling and good reading of the game.
A subdued performance from the Rossoneri captain who struggled to create chances for his team-mates and often proved wasteful in the final third.
After being left out of Brazil's provisional World Cup squad, Kaka failed to prove Scolari was wrong and was easily contained by the Atalanta defence.
A strong performance from the Ghana international who broke up the attack excellently and supplied the dangerous low cross which assisted Milan's opener.
The Guinea international was at the heart of the action as he gave away the penalty for Atalanta's equaliser before he was sadly the target of bananas thrown to the pitch.
Struggled to get the better of the Atalanta centre-backs but was desperately unlucky not to get on the scoresheet after rattling the woodwork with two stunning efforts from outside the box.
Added steel to the Atalanta midfield and provided the assist for Brienza's stunning winner.
G. De Luca
The 22-year-old was a lively addition from the bench, though he did lack composure in the final third.
Produced the champagne moment for Atalanta as he curled a stunning first-time strike into the top corner with the final kick of the game.
A frustrating performance from the Moroccan who gave the ball away easily and struggled to provide accurate crosses for Pazzini and Balotelli to attack.
S. El Shaarawy
Made his first appearance in 2014 from the bench and showed glimpses of his potential by stretching the Atalanta defence with his pace and dribbling skills.