Massimiliano Allegri admitted Juventus lost their cool during the 3-2 defeat at Sampdoria that saw them lose ground on Serie A leaders Napoli.
The Bianconeri were the better of the two sides over the opening 45 minutes with Gonzalo Higuain and Juan Cuadrado both culpable for squandering good chances.
But, after attempting only one shot in the first half, Sampdoria exploded into life after the restart as they raced to a three-goal lead by the 79th minute.
Juve reduced the deficit to one with stoppage time strikes from Higuain and Paulo Dybala, but Allegri was made to pay for leaving the likes of Dybala, Gianluigi Buffon and Andrea Barzagli out of his starting XI.
"We needed patience after going 1-0 down and not to lose our sharpness, as there were 40 minutes to go. Plenty of time to turn it around," Allegri told Mediaset Premium.
"From a possible equaliser, we went 2-0 behind. That can happen too, but we cannot leave ourselves open to the counter. It is disappointing.
"This was an unexpected slap that really made us lose our cool. We should have been patient, even if things were not going our way. It is a long game, you have to stay calm."
3 - Sampdoria have scored three times with the first four shots on target they have fired in this match. Fierce. #sampdoriajuventus— OptaPaolo (@OptaPaolo) November 19, 2017
Allegri also pointed the finger at Sami Khedira for his role in the decisive third, scored by Gianmarco Ferrari.
"If Khedira had not stood there with his hand up appealing for offside, we would not have conceded the third goal," he said.
"It was a bit like [in the 2-2 draw with] Atalanta, as when we slow down the tempo, we run huge risks. We've got to patch things up."
Juve's hopes of getting back on track will not be helped by a visit from Barcelona in the Champions League on Wednesday.
|WATCH: Djokovic wins match, loses car|
|Bolt arrives in Sydney for A-League trial|
|Red-hot Bertens beats Svitolina, Halep marches on|
|Snedeker preserves Wyndham lead|
|Halep hits back to torment Tsurenko|
|Raonic fails to break Djokovic stranglehold|
|Emery seeks more ´demanding´ Ozil|
|CAF Champions League Review: Wydad, Al Ahly & TP Mazembe qualify|
|Stephen Curry wants to finish his career with Warriors|
|Hazard among Europe´s best but can improve, says Sarri|
|Tigers boost top-two hopes, Giants close in on fourth|
|Birmingham City 0 Swansea City 0: Monk´s men held despite dominance|
|Inter taking legal action against Tebas over Modric transfer comments|
|Serie A transfer round-up: Zaza joins Torino, Parma sign Gervinho|
|Roma chief Pallotta makes light of De Laurentiis claim|
|Federer starts double-header by seeing off resilient Mayer|
|Ospina joins Napoli on loan from Arsenal|
|Klavan completes Cagliari switch|
|Djokovic holds out against Dimitrov as Raonic awaits|
|New dates confirmed for postponed Serie A fixtures|
|Halep breezes past Barty to set up Tsurenko clash on same day|
|Olesen unable to capitalise on strong start as Jamieson, Waring go clear|
|Hoffenheim tie Kramaric to four-year deal|
|Mina to miss Southampton clash while Gomes is ´weeks´ away|
|Barcelona coach Valverde dismisses Pogba speculation|
|Valverde not prioritising Champions League over defending Barcelona´s LaLiga title|
|Allegri thanks outgoing Juventus icon Marchisio|
|Pants display from Beef? Johnston forced into change of trousers in Sweden|
|Tour champion Thomas has Welsh velodrome named in his honour|
|Gloucester surprised and disappointed by RFU´s swift Cipriani charge|
|Storm skipper Smith´s back injury not ´too serious´|
|Spurs fixture switch doesn´t appeal to Guardiola|
|Brazil call up Andreas Pereira & Arthur but omit Man City stars|
|Mbappe returns to PSG squad, Kehrer set for debut|
|No Messi in Argentina squad as Simeone wins first call-up|
|England man Roy embarrassed by self-inflicted facial injury|
|Atletico Madrid fined for breaching third-party regulations|
|Cipriani charged by RFU after common assault conviction|
|No contact, no negotiation - Leonardo denies AC Milan deal for Milinkovic-Savic|
|Kovacic set for Chelsea debut against Arsenal|
|Fury´s father restrained as Wilder crashes Pianeta weigh-in|
|Kohli and Bumrah fit for win-or-bust Test|
|Stokes ready and desperate to help England, says Root|
|Salah, Mane and Firmino not in competition says Klopp|
|Darmian staying at Manchester United, says Mourinho|
|Guardiola cites fatigue as factor for stricken De Bruyne|
|Kovac approves Rudy departure from bloated Bayern midfield|
|Klopp insists no player leaves without his approval amid Klavan rumours|
|Real Madrid complain to FIFA over Inter´s alleged Modric approach|
|Mourinho ´has never been so happy´ with unsettled Pogba|
|Manly implode amid Barrett uncertainty, Storm´s Smith injured|
|Sarri certain Hazard is staying at Chelsea|
|Liverpool, Champions League, Manchester derby - The matches De Bruyne will miss due to injury|
|Campbell joins Frosinone from Arsenal on permanent deal|
|Schalke sign Lille´s Mendyl to end left-back hunt|
|Stokes back in England team as Curran drops out|
|Ronaldo doesn´t guarantee Juventus the title, warns Allegri|
|Tuchel keen to guide PSG star Mbappe after World Cup heroics|
|Yuri: I can see Neymar joining Real Madrid|
|Milan pounce for Castillejo as Bacca joins Villarreal permanently|
|De Bruyne to miss three months for Manchester City|
|Manchester City talent Arzani completes Celtic loan|
|I know how precious my career is, says regretful Cipriani|
|Paulo Bento named new South Korea coach|
|Milan complete Laxalt deal|
|Poyet suspended by Bordeaux after outburst against board|
|Tuchel will let Neymar and Cavani settle penalties themselves|
|Hooper: We´re ready, bring on the All Blacks!|
|Outstanding Australia deserve our respect - Read|
|Dragons´ Widdop set for Finals return|