Germany head coach Joachim Low believes his experimental side must find an extra gear to get past Chile in their next Confederations Cup match.
The world champions began with a 3-2 victory over Australia in Sochi on Monday, where Lars Stindl and Leon Goretzka netted their maiden international goals either side of a converted penalty from captain and man-of-the-match Julian Draxler.
A pair of errors by goalkeeper Bernd Leno allowed Tom Rogic and Tomi Juric to pull Australia back into the contest when Die Mannschaft should have been out of sight by weight of first-half opportunities alone.
Low rested many of his leading stars for the tournament and, although his youth and fringe players sparkled for the first hour, they closed the show nervously as Australia sniffed an equaliser.
The 57-year-old warned Copa America holders Chile will be a different proposition entirely after opening Group B with a win of their own, 2-0 against Cameroon in Kazan.
"Chile is going to be a match on an entirely different level because Chile is playing with great intensity and ability," Low said at his post-match news conference. "We must retain our stability over 90 minutes, not 60.
"In the first half we played very well, good combinations and everything was under control. The bad thing of it all was we had only a 2-1 lead. We had a number of other opportunities.
"We were unable to score a third or a fourth. Australia didn't really have any opportunities other than their goal.
"In the second half, after 60 minutes, we lost our common thread and our attacks were not so consistent. We need to work on that to retain our stability.
"But with a new team I think things have worked very well. I don't think you should have excessively high expectations. There were good approaches by my team."
Germany's tactical flexibility during the first half, with Draxler roving in from the left flank as Julian Brandt caused havoc down the right and the midfielders inside interchanged with aplomb, was a delight to behold at Fisht Stadium.
Nevertheless, Low was keen to warn that Chile are also masterful in this department.
"Chile are one of the world's best teams, no matter what you say about this tournament," he said. "Chile are well experienced and have fantastic individual players. In terms of tactics they are as flexible as any other team.
"They can change things as matches are still going. It's amazing to see how they are playing. Every tournament has different dynamics."
Schalke midfielder Goretzka was involved in the build-up to Stindl's fifth-minute opener and was clattered by Massimo Luongo to win Germany's penalty before enjoying his own moment of glory, leaving the coach suitably impressed.
"He was very strong," Low added. "In the past days he has been involved in our activities and this match has shown he is a very present personality.
"He has won one-on-ones and he is running from the midfield deep into the area and that is very hard to fight back from for the opponents. He has made a very good impression."
|Yankees level Astros series, Dodgers take 3-0 lead|
|Aldridge praises Popovich after Spurs renewal|
|Redknapp: Spurs boss Pochettino could manage Real Madrid|
|Wallabies to host three-Test series against Ireland|
|That will be hard to beat – Klopp revels in record win|
|Cowboys RB Elliott eligible to play after latest court ruling|
|Bulls´ Mirotic out indefinitely after fight with team-mate|
|Spurs showed they can compete with elite - Pochettino proud after Madrid draw|
|Ballon d´Or? We all know Messi is best, says Valverde|
|Players rally around Hayward after sickening injury on Celtics debut|
|Celtics´ Hayward suffers ankle fracture|
|He´s getting better – Zidane backs Benzema|
|Napoli star Insigne unsure if he´ll be fit to face Inter|
|Manchester City can win Champions League, says Napoli boss Sarri|
|Iguodala out of Warriors´ season opener against Rockets|
|LeBron to play in Cavs´ opener against Celtics|
|Sharapova and Kerber suffer first-round exits|
|Berizzo plotting Sevilla´s revenge after Spartak Moscow humiliation|
|Porto boss Conceicao defends Casillas omission|
|We know it´s difficult now, admits Dortmund boss Bosz|
|Krajinovic denies Rublev happy homecoming in Moscow, Ferrer through in Antwerp|
|It´s tough but it´s not over - Van Bronckhorst|
|Monaco know it will be difficult to qualify now, says Sidibe|
|I don´t know what happened - Sarri bemused by Napoli´s slow start|
|We are growing consistently, insists upbeat Zidane|
|Holders Tenerife respond with win over Ludwigsburg|
|I want to stay at Saracens – McCall not interested in Test job|
|Guardiola hails ´perfect´ City after beating ´one of the best´|
|Real Madrid can´t be happy with Tottenham draw, says Navas|
|Klopp heralds counter-pressing as Liverpool run riot against Maribor|
|Liverpool break record in Maribor thrashing|
|City style fades but newfound steel gives Guardiola reason to believe|
|Ederson kept us in it - Walker relieved after City´s second-half wobble|
|Emery backs ´intelligent´ Mbappe to respond|
|APOEL 1 Borussia Dortmund 1: Sokratis header spares Burki´s blushes|
|Feyenoord 1 Shakhtar Donetsk 2: Bernard brace piles pressure on Van Bronckhorst|
|Monaco 1 Besiktas 2: Tosun double pours more misery on Jardim´s men|
|Spartak Moscow 5 Sevilla 1: Clinical second-half show stuns woeful Spaniards|
|RB Leipzig 3 Porto 2: Hosts claim maiden Champions League victory|
|Maribor 0 Liverpool 7: Salah and Firmino doubles inspire rampant Reds|
|Manchester City 2 Napoli 1: Guardiola´s men see off Serie A leaders despite second-half scare|
|Real Madrid 1 Tottenham 1: Ronaldo on target as Lloris heroics earn point|
|´Older, better´ Dzeko feeling good on return to England|
|Kubica has ´another productive day´ of Williams testing|
|Persepolis 2 Al Hilal 2 (2-6 agg): Kharbin at the double as Al Hilal reach final|
|Monaco without Ghezzal and Jovetic for Besiktas clash|
|Hafeez recalled for Sri Lanka T20 series|
|De Bruyne agent eyes Neymar, Mbappe-style wages for Manchester City star|
|Mertesacker not interested in Deeney’s ´cojones´ comment|
|Craig Shakespeare sacked by Leicester City|
|North set to miss Wales´ autumn series with knee injury|
|Messi is the best in the world, says Paulinho|
|Valverde ready for ´emotional´ game against old boys OIympiacos|
|Nadal to miss Swiss Indoors Basel due to knee injury|
|Manchester United expecting a tough game against Benfica, says Ashley Young|
|Froome eyes Paris-Roubaix for Tour preparation|
|Rafinha has ´no interest´ in Barca exit - Mazinho|
|Mourinho would be happy with draw against wounded Benfica|
|O´Neill wary of Eriksen threat after Republic of Ireland draw Denmark in World Cup play-offs|
|NBA Preview: Five key storylines entering the 2017-18 season|
|Warrington pull off Roberts coup|
|F1 Raceweek: Hamilton closing in, new faces and pink tyres|
|Simeone and Atletico wary of Qarabag threat|
|Robben set for landmark as Barca´s Valverde welcomes former side - Champions League in Opta numbers|
|Conte´s harsh words will motivate us, insists Alonso|
|Mourinho: I´m not signing new contract and I´m not joining PSG|
|Bayern´s Martinez out for at least two matches|
|Furyk hints at Woods Ryder Cup vice-captaincy role|
|Besiktas ask fans not to attend Champions League clash with Monaco|
|Porte set for comeback from Tour de France crash|