Jurgen Klopp slammed Liverpool's defending after two avoidable second-half goals saw the 2016 finalists dumped out of the EFL Cup by Leicester City.
Liverpool – who fielded a side showing eight changes from the 1-1 draw with Burnley – conceded twice in the second half at the King Power Stadium to go out of the competition in the third round.
Klopp's men initially cleared a corner but then failed to deal with a return ball into the box, allowing Shinji Okazaki to seize on the scraps and angle a low shot beyond goalkeeper Danny Ward.
Leicester put the tie beyond their opponents with 12 minutes remaining, working the ball in field from a throw in before Islam Slimani unleashed a left-footed effort into the top corner.
"We played really good football in the first half; we should have decided the game early. We had big chances," an irate Klopp told Sky Sports.
"But that's football – it's a 90-minute game.
"It was a second ball after a corner I think, then a throw in. I'm sick of goals like this, to be honest. It's unbelievable.
"You need to stay concentrated to the end, they scored too easy. The first goal, we don't push up together, I can't say it one time or a thousand times, or whatever, it's not nice to concede these goals and today it's again because of this.”
Liverpool had dominated the first half of the all-Premier League tie but struggled for fluency after the break without Philippe Coutinho, who was replaced by Ben Woodburn at half-time.
However, Klopp revealed it had always been the plan for the Brazilian – who only made his first club appearance of the season last weekend – to be withdrawn at the midway stage.
"Forty-five minutes was the limit. We cannot push him through," the German said.
Klopp will hope for better fortunes when he takes his side back to the same venue in Premier League action on Saturday.
23 de septiembre 2018
|Centurions Rohit and Dhawan put India in final|
|Eagles top Colts as Wentz makes his return|
|Barcelona 2 Girona 2: Stuani brace punishes Lenglet red|
|Frosinone 0 Juventus 2: Ronaldo redeemed as champions extend perfect start|
|Gattuso: No alibis for two-faced AC Milan|
|Bangladesh hold on despite late Afghanistan charge|
|Composed Woods hits turn with five-shot lead|
|Chiefs´ Mahomes has another record-breaking Sunday|
|Saints QB Drew Brees passes Brett Favre for most career completions|
|Emery hints Leno may need patience after Cech display|
|Picamoles scores four as Montpellier batter 14-man Toulouse|
|Messi breaks LaLiga record|
|Worcester fend off prowling Tigers, Sarries go top|
|AC Milan 2 Atalanta 2: Last-gasp Rigoni rescues a point|
|Neymar keen to repay supporter affection|
|Pellegrini rues West Ham´s wastefulness|
|Paris Saint-Germain´s positive response buoys Tuchel|
|Lewis rekindles fond memories with Vilamoura triumph|
|Arsenal 2 Everton 0: Lacazette, Aubameyang extend winning streak|
|Stephens suffers as Osaka withdraws in Wuhan|
|Rhinos run riot to secure Super League status|
|Risk brings reward for victorious Marquez|
|Let´s have some fun - Wentz tweets message to Eagles fans ahead of return|
|Maybe in a year Chelsea will be at Liverpool´s level – Sarri|
|Under-pressure Rodgers bemoans ´bitty´ Celtic start|
|Slater should be banned for Grand Final - Fittler|
|Simon ends Bachinger fairytale to lift Metz title|
|Dominant Thiem reigns in St. Petersburg|
|Neymar hands young fan his shirt during Paris Saint-Germain victory|
|Quick-Step Floors storm to fourth time trial gold|
|Jorginho sets new passing record in West Ham draw|
|Rubiales slams ´crazy´ LaLiga schedule|
|Rennes 1 Paris Saint-Germain 3: Tuchel´s Ligue 1 record stays perfect|
|Why so serious? Joshua reveals Fury has blocked him on Twitter|
|West Ham 0 Chelsea 0: Sarri´s 100 per cent start comes to frustrating end|
|Marvellous Marquez reigns in Aragon yet again|
|Real Madrid will not go to the USA with LaLiga - Perez|
|Erasmus adds five players to Springboks squad|
|Barcelona snub ´hardest decision´ of Griezmann´s career|
|Perez pays tribute to Ronaldo and Zidane|
|Cazorla concedes Arsenal lacked self-belief under Wenger|
|Get King Kong for AJ! Joshua understands critics´ demands|
|Korea change sees Bertens take title in Seoul|
|I love Bilic, but I let him down – Arnautovic|
|He will never fight me! Fury hits out at ´ponderous´ Joshua|
|Azpilicueta convinced Hazard can be ´the best´|
|Wigglesworth´s career in Opta numbers as he breaks Premiership record|
|Ronaldo has nothing to prove, says Allegri|
|Federer shines as Europe hold narrow lead at Laver Cup|
|Astros, Yankees and Indians record dramatic wins|
|Pliskova too strong for Osaka in Tokyo final|
|Kyle Busch comes from behind to win again in Virginia|
|Dybala can play as a striker – Allegri|
|Pochettino never doubts ´special´ Kane|
|NASCAR results at Richmond: Kyle Busch comes from behind to win again in Virginia|
|McIlroy just worried about himself at Tour Championship|
|MLS Review: Atlanta stay clear of Red Bulls|
|Rose reminds everyone Woods has been here before|
|Cronk in doubt for Grand Final due to ´severe´ shoulder injury|
|Timberwolves sign Towns to extension|
|Hearn wants Wilder for Joshua, not ´un-entertaining´ Fury|
|Woods pleased with putting consistency|
|Ballon d´Or not a focus for Asensio|
|Man City star Mendy revels in Joshua triumph|
|Braves clinch first NL East title since 2013|
|I want Wilder, says Joshua|
|Inter must live on the edge to win, says jubilant Spalletti|
|Woods leads by three at Tour Championship|
|Bordeaux end Clermont´s perfect start, Zebo at double in Racing win|
|Lopetegui not worried about Courtois footwork|