Andreas Christensen cost Chelsea victory against Barcelona in the Champions League on Tuesday, but Antonio Conte hailed the defender's "incredible" performance.
After a flawless defensive display at Stamford Bridge, where the Premier League champions led through Willian's strike, Christensen's loose pass evaded Cesc Fabregas with 15 minutes to play.
Barca captain Andres Iniesta subsequently set up Lionel Messi to beat the otherwise untested Thibaut Courtois to earn the Catalans a crucial away goal to take into the second leg on March 14.
Conte left club captain Gary Cahill on the bench but the Italian said he did not regret selecting Christensen in the heart of a back three, the Denmark international flanked by Antonio Rudiger and Cesar Azpilicueta.
"It was a great performance, an incredible performance," Conte told a post-match news conference. "He is only 21 and it is great he can play with that maturity. He was one of the best players. He played a top game and I am very pleased for his performance.
"I don't remember a great save from Thibaut. They had the one chance in the first half with Paulinho and then the second half with [Luis] Suarez. I think we played a really good game and I must be pleased because my players made a great effort. They followed the plan, the programme we prepared.
"They showed themselves to be a really strong team, a fantastic team, but we showed that if we are ready to work very hard together defensively but at the same time when you continue to have the right feeling with the ball to create the chance to score I think that we can try to do something incredible at Camp Nou."
Antonio Conte says we were very close to playing a perfect game. He says there was one mistake but against this type of opponent, if you do that, you pay. There is a bit of disappointment but this game must give us confidence he adds. #CHEBAR— Chelsea FC (@ChelseaFC) February 20, 2018
Conte did not make his first change until 83 minutes had been played, Alvaro Morata replacing Pedro, with Danny Drinkwater then coming on for former Barca midfielder Fabregas.
But Conte, who did not use his third substitution, with Olivier Giroud among the players left on the bench, reiterated that he felt Chelsea – who fielded a front three of Willian, Pedro and Eden Hazard – performed to a high standard.
"Without the mistake Barca were struggling to create a chance to score," Conte said. "We tried to exploit the situation. Don't forget we hit the post twice and we were unlucky. We gave 120 per cent.
"Our three strikers played very well and a fantastic game. Willian played really well against Hull [City in the FA Cup] and in the last three games we have scored eight times – seven with Willian, Pedro and Hazard. We must be pleased with the game, not the final result."
21. September 2018
|Osaka through as Azarenka and Garcia crash out|
|Burgess weighing up legal options after being cleared in Rabbitohs investigation|
|Uncapped Cottrell and Gordon named in Wallabies squad|
|He´s done fantastic work - Mourinho hails Wolves boss Nuno|
|Joshua v Povetkin: No need for fireworks on AJ´s Wembley return|
|Six titles, 204 goals - Aguero´s incredible City career in Opta stats|
|Read to miss Argentina clash, Ioane brothers sign new deals|
|Pedro allays injury fears after Europa League clash|
|Dilly dilly to all the Cleveland fans! Mayfield promises further Browns success|
|Manchester United ´hell´ left Zaha depressed|
|Jackson hesitates in naming Mayfield as Browns´ starting QB|
|LeBron congratulates Browns for ending 635-day winless streak|
|Aguero Extension: 10 of the best goals from the Manchester City star|
|Aguero signs City contract extension until 2021|
|Stress from drink-driving charge may have contributed to Lloris injury – Pochettino|
|CBF backs Cruzeiro´s Dede appeal and suggests VAR investigation|
|The big Friday Premier League quiz|
|Red Sox clinch AL East with win over Yankees|
|Brighton star Knockaert reveals battle with depression|
|Bud Light beer fridges open after Browns snap 19-game winless streak|
|Browns end 635-day drought with first win since 2016 after downing Jets|
|Blue Jays overturn 8-2 deficit in improbable ninth-inning comeback|
|Colo Colo 0 Palmeiras 2: Scolari´s men poised for Libertadores SFs|
|Tour Championship would enhance successful year, says Tiger|
|Pogba: Man United getting better after winning run|
|What bothers me is that he has time to even do that – LeBron responds to Trump tweet|
|Cowboys most valuable NFL team for 12th successive year|
|Mkhitaryan aiming for glory with Europa specialist Emery|
|Sarri: Pedro´s injury is not too serious|
|This Week in U.S. Sports: Drama in Minnesota, a Judge returns and tragedy in Iowa|
|Tottenham will overcome rough patch – Lamela|
|Torreira impresses for Arsenal but leaves with knock|
|Gattuso urges Higuain to be less predictable with his movement|
|Steelers´ Brown: ´Obviously I don´t want to be traded´|
|Woods, Fowler share Tour Championship lead|
|LeBron James backs Serena Williams after US Open controversy|
|Thiem into St Petersburg quarters, but retiring Youzhny bows out|
20. September 2018
|Wigan clinch home semi-final with win over Huddersfield|
|Can apologises following sexism accusations|
|De Bruyne expects to be back for Manchester derby|
|Celtic 1 Rosenborg 0: Griffiths late show lifts Hoops|
|Woods eagles 18 to make 65 at Tour Championship|
|Arsenal 4 Vorskla 2: Aubameyang at the double in entertaining triumph|
|Dudelange 0 AC Milan 1: Deflected Higuain goal spares Gattuso´s blushes|
|Birthday boy Rashid inspires Afghanistan to Asia Cup win|
|Sarri feeling sorry for ´unlucky´ Morata|
|Ryder Cup pick Garcia shoots 66 at Portugal Masters|
|Ronaldo, Zidane, Cantona and the most infamous red cards|
|Villarreal 2 Rangers 2: Arfield and Lafferty steal point for Gerrard´s men|
|PAOK 0 Chelsea 1: Willian strikes as Morata misfires|
|Rain delays Ostapenko in Seoul, Wang books Guangzhou semi|
|Pochettino backs Kane to end goal drought|
|We figured it out - 76ers´ Markelle Fultz rebuilds jump shot|
|Joshua: Povetkin my second-toughest fight|
|Relaxed Pochettino not pushing panic button|
|Why Manchester City fans must fix their relationship with the Champions League|
|Majestic Giorgi ends Wozniacki´s reign in Tokyo|
|Pochettino unwilling to risk Alli fitness|
|Bigger Champions League tests to come, warns Pogba|
|Eight for 10! - Nadeem spins his way to world-record figures|
|A 4-1 lead cut to 3-2 by VAR, but Quakes have no complaints after Atlanta defeat|
|UEFA opens disciplinary proceedings against Ronaldo|
|Joshua v Povetkin: Recapping AJ´s previous world title defences|
|Players told to ink twice over showing tattoos at Rugby World Cup in Japan|
|Mariano targeting Spain call-up after goalscoring Madrid return|
|Pandya, Axar and Thakur out of Asia Cup|
|England omit Cipriani, Tuilagi and Ashton called up|
|Can reacts to Ronaldo´s red card: We are not women|
|One Year to Go: Five Rugby World Cup debutants set to shine|
|Shy Osaka not comfortable with new-found fame|