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."
|Sydney FC 3 Melbourne City 1: Champions come from behind to go eight points clear|
|Red-hot Salah wins Player of the Month|
|Heynckes unaware of reported Sanches loan termination|
|Maradona: I´d have won more Ballons d´Or than Ronaldo and Messi|
|Khawaja pleased to restore parity in Perth|
|Bairstow enjoys playful celebration of crucial century|
|The Ashes Round-up: Smith leading by example again|
|Wenger confirms Wilshere contract talks imminent|
|Sensational Smith leads Australia fightback|
|We´ve never been approached by Man United – Wenger rejects Ozil reports|
|Joshua ´absolutely´ capable of unification, says Klitschko|
|Mathews fit for India-Sri Lanka series decider|
|Lewandowski demands focus ahead of Christmas|
|Fury not rushing back to take on Joshua|
|Klopp right to rotate at Liverpool – Neville|
|Overton strikes twice for England in Perth|
|LeBron´s 59th triple-double leads Cavaliers past Lakers|
|Jets offensive coordinator admits surrender in blowout loss to Broncos|
|Osweiler helps Broncos past Colts|
|England collapse to be all out for 403 in Perth|
|Donnarumma plays down Milan exit rumours|
|Barkley could leave in January – Allardyce|
|Siemian suffers shoulder injury, Osweiler in for Broncos|
|Pulisic voted youngest-ever male USA player of the year|
|Griezmann will be allowed to leave – Simeone|
|Steelers LB Shazier has begun rehabilitation process|
|Guardiola appears to aim another dig at Mourinho|
|Vardy relishing Fleetwood return|
|Pau stay perfect with win over Agen|
|USB joking? Klitschko stick and robe sold for mega money|
|Almiron blocked from becoming Las Palmas coach|
|Ligue 1 adopts VAR from next season|
|Calabria extends AC Milan contract|
|Everton give new deals to Calvert-Lewin, Holgate & Kenny|
|Gooch backs Cook to rediscover England form|
|Itoje could return before Six Nations|
|Under-fire Hughes promises results will come for Stoke|
|Mourinho asked to explain pre-Manchester derby comments|
|Stoger sets Dortmund end of year target|
|Dyche: No swaggering from high-flying Burnley|
|Watzke plays down Nagelsmann rumour as Dortmund plan for 2018|
|Guardiola´s record runs with Manchester City, Bayern Munich and Barcelona compared|
|Martin lashes out at ´double standards´ in Froome ´scandal´|
|Day two crucial for England´s Ashes chances - Gooch|
|Benteke goal drought a concern for Hodgson|
|Nibali to skip 2018 Giro to focus on Tour|
|City look frightening – Rose|
|Kahn regrets rejecting Manchester United|
|Ireland scrum-half Marmion commits to Connacht|
|Giants president Mara wants Manning back for 2018|
|Malan pleased to silence the doubters with maiden century|
|No Australia involvement in fixing allegations - Paine|
|Bayern wrapping up Ribery for Christmas|
|Wilshere no closer to signing fresh Arsenal contract|
|Resurgent Rooney has Europe´s best shot-conversion record|
|Froome fears salbutamol stigma for asthma sufferers|
|Pastore bullish over PSG chances against Madrid|
|Paine calls on Australia to trigger England collapse|
|Independiente boss overjoyed by ´dream´ Copa Sudamericana success|
|Malan ´over the moon´ with first Test century|
|Silva is an animal - Guardiola|
|The Ashes Round-up: Malan´s maiden hundred steals the show|
|Malan and Bairstow shine as England prosper in Perth|
|Hewitt to come out of retirement at Australian Open|
|Wenger not blaming Sanchez for Arsenal´s goal woes|
|I haven´t broken any rules - Froome believes legacy remains untainted|
|Stokes finds form with 93 off 47 balls|
|Mourinho can´t find room for misfiring Mkhitaryan|
|De Grandhomme to miss ODI series following death of his father|
|Aggressive Aussies dismiss Stoneman and Root in eventful session|