AC Milan's domestic struggles carried over to the Europa League as they battled to a frustrating 0-0 home draw with AEK Athens on Thursday.
The Rossoneri failed to create a clear-cut opportunity and can consider themselves fortunate to have maintained their two-point advantage at the top of Group D.
Vincenzo Montella's men, whose rollercoaster defeat to rivals Inter on Sunday was their third straight Serie A loss, had been expected to recapture form against the Greek side.
But it was AEK who came closest to a first half opener as Mateo Musacchio gifted an opportunity to Andre Simoes, who was unable to hit the target from a narrow angle.
Milan showed more life after the restart and could have broken the deadlock through Patrick Cutrone, but three points would have been undeserved reward for a limp display.
Instead, the draw will only serve to heighten the pressure on manager Montella, whose side still have work to do to advance to the knockout stages.
Cutrone came in as one of four changes to the side which lost 3-2 in the Derby della Madonnina and the young striker had the ball in the back of the net inside seven minutes, only to be flagged for straying marginally offside.
Despite a lack of possession, AEK had few problems to contend with over the opening 25 minutes as the hosts searched for the kind of cutting edge that has seen them score eight goals in their first two group stage games.
And Milan were almost made to pay for their lethargy when Musacchio was robbed of possession in his own penalty area by Simoes.
From an almost impossible angle, the Portuguese midfielder fired right across the face of goal as Gianluigi Donnarumma left a gap at his near post in anticipation of a cut-back.
The scare was not enough to shock the Rossoneri into life, though, with Petros Mantalos dallying over another promising opening for AEK, before Adam Tzanetopoulos drew a sharp diving save from Donnarumma.
Montella's men did force the visitors into a pair of scrambling blocks late in the half, but the deadlock remained intact at the interval.
Both sides showed more attacking endeavour soon after the restart with Helder Lopes heading over at one end and Andre Silva doing likewise from a Suso corner.
Giannis Anestis was then called on to parry Hakan Calhanoglu's low drive in encouraging signs from a more fluent Milan.
Montella turned to Nikola Kalinic after the hour and the former Italy striker might have wished the next chance had fallen to his Croatian substitute as Cutrone failed to squeeze a finish past Anestis when the ball broke kindly in the area.
Anestis did superbly to smother and stop Suso finding the decisive goal after he had raced unchecked into the penalty area, and the goalkeeper rose to the occasion yet again in stoppage time when he blocked a dangerous Calhanoglu free-kick, marking the final frustration for Milan and Montella from a performance that only raises more questions.
|Maltese champions Valletta want Usain Bolt|
|It would have been normal to kill them! Luis Enrique slams abysmal Spain|
|Seahawks, Trail Blazers owner Paul Allen dies aged 65|
|Red Sox ace Sale released from hospital, still set for game five|
|Beer-throwing fan banned by Patriots|
|Southgate lauds ´tremendous´ attackers after famous Spain win|
|Djokovic closing in on summit as he scales new heights|
|Monaco the natural move for Henry - Martinez|
|Ending England drought a ´beautiful feeling´ – Sterling|
|Halep to face Pavlyuchenkova in Moscow comeback|
|NBA 2018-19: Five non-LeBron James storylines to follow|
|Spain 2 England 3: Kane inspires Three Lions as Sterling ends drought in style|
|Bosnia-Herzegovina 2 Northern Ireland 0: Dzeko double leaves O´Neill´s side on the brink|
|Mannarino stops the rot in Moscow|
|Neymar pleased Brazil will not face Messi in Argentina clash|
|Buccaneers fire defensive coordinator Mike Smith after loss to Falcons|
|´Surprised´ Deschamps accepts he could´ve made more effort with Koscielny|
|Kuwait 0 Australia 4: Socceroos deliver win for new coach Arnold|
|Van Dijk fit for Liverpool return - Koeman|
|NBA 2018-19: Eastern Conference predictions|
|NBA 2018-19: Five rookies to watch|
|Denly replaces injured Dawson in England ODI squad|
|Low confirms under-fire Neuer to start against France|
|NBA 2018-19: Western Conference predictions|
|Bolt offered two-year deal by European club, says agent|
|NBA 2018-19: LeBron the Laker - what it means|
|Griezmann ahead of Mbappe for Ballon d´Or - Modric|
|Billy Vunipola ruled out with fractured arm|
|Get the chequebook out! - Mayweather talks up potential Khabib clash|
|Amla ruled out of Australia tour|
|Class act Hamilton more complete than ever - Wolff|
|NBA 2018-19: It´s a big season for - Ball, Kawhi, Carmelo, Love & Cousins|
|Bellew: I have no fear of Usyk|
|Birthday boy Ozil is the most creative player in Europe|
|CSA reveals De Villiers and Rabada involved in Mzansi Super League|
|FA condemns England supporters involved in trouble in Seville|
|Gascoigne hits back over Scottish Hall of Fame snub|
|NBA 2018-19: LeBron closing in on Jordan, Curry chasing Miller and Allen|
|Ter Stegen should start ahead of Neuer for Germany – Matthaus|
|England´s Sterling impressed by Sancho´s work ethic|
|Vandoorne seals switch to Formula E|
|Halep to end 2018 as world number one|
|Sri Lanka´s Jayasuriya charged by ICC with breaching anti-corruption code|
|Vermaelen out for six weeks with hamstring injury|
|LeBron and Irving did not fall out, says ex-Cavs trainer|
|Ramsey out of Wales´ clash with Republic of Ireland|
|Bolt angry with drugs test|
|Bad luck is not a coincidence – Kimmich concerned by Germany form|
|Mahomes: Chiefs need to win like Brady and the Patriots|
|Schuster warns Real Madrid not to panic-buy striker in January|
|We´re here to win! - Paine not happy celebrating a draw|
|Injured Thauvin out of Germany clash|
|Southgate hits out at early Premier League start|
|Modric to Inter talk is ´fantasy´, says Guardiola|
|Pats hand first loss to Chiefs after wild shoot-out|
|Cowboys, Ravens dominate as Pats beat Chiefs in NFL classic|
|Brady becomes first QB to 200 regular-season wins in NFL|
|Red Sox level series against Astros|
|Mbappe leaves red-faced Dembele on his backside|
|Red Sox ace Sale admitted to hospital with stomach illness|
|From UFC to NFL? McGregor throws pass for Cowboys|
|Ancelotti praises ´dangerous´ Mbappe|
|Uncapped Papalii named in All Blacks squad|
|Kane would star in LaLiga – Ramos|
|Guardiola unsure about Man City´s Champions League chances|
|Dzeko: Premier League return? You never know|
|Gurley dominates to help Rams beat Broncos|
|Butler expected to play Timberwolves´ opener against Spurs|
|I´m no wizard – Mancini asks for patience with Italy|
|The Messi and Ronaldo era is phenomenal – Guardiola|