Robert Lewandowski warned he is feeling fresh and is looking to make an impact for Poland at the World Cup.
The striker wants Poland to improve on their showing from Euro 2016, when they reached the quarter-finals before being knocked out by eventual champions Portugal on penalties.
Lewandowski played close to 500 fewer Bundesliga minutes this season than he did heading into the tournament in France, and he hopes to reap the benefits of that reduced workload in Russia.
"If we compare the preparations with those from before Euro 2016, it is completely different," said Lewandowski.
"I am also coming off a different season at club level than two years earlier. This time I have played fewer minutes and matches.
"I hope that you will see freshness [from the team] in the whole tournament and the form will be improved from the first match.
"After a dozen or so years of drought, we are back at the World Cup and I hope we will show our best. I hope the fans will remember us as much as the teams from 1974 and 1982."
Pierwsze zapoznanie z murawą w Soczi! Nasi już trenują! pic.twitter.com/cVhn2KjuaR— Łączy nas piłka (@LaczyNasPilka) June 13, 2018
Poland captain Kamil Glik will miss their opening Group H matches against Senegal and Colombia due to a shoulder injury reportedly sustained while attempting a bicycle kick in training.
Lewandowski said: "I know this situation perfectly because I've had the same injury. Knowing Kamil, how he endures pain and how he deals with injuries, his return pleased us all.
"I hope he will quickly return to form, be able to train and fight with us. If he says he is ready to play and fight, it will be clear on the pitch."
|Roma sign midfielder N´Zonzi from Sevilla|
|Alonso to leave F1: Who will replace Fernando at McLaren?|
|Extraordinary Zidane is in Real Madrid´s past - Lopetegui|
|Alonso to leave F1: Then and now - how the grid, teams and calendar have changed since 2001|
|Wawrinka and Azarenka receive US Open wildcards|
|Parma sign Napoli pair Inglese and Grassi on loan|
|Sandakan castles Proteas before Sri Lanka squeeze home|
|Ronaldo sale won´t stop Real Madrid winning - Ramos|
|Predators sign Ryan Ellis to eight-year, $50M contract|
|Curran, Woakes, Rashid - who makes way for Stokes in England´s Test XI?|
|Griezmann well positioned for Ballon d´Or, says Simeone|
|Criscito: I was on Genoa bridge shortly before collapse|
|Alonso to leave F1: How the Spaniard´s numbers stack up to the greats|
|Rookie LB Roquan Smith finally signs Bears contract|
|De Villiers enjoying relief from ´unbearable´ Proteas pressure|
|Fernando Alonso to leave F1|
|Spalletti extends Inter contract|
|Godin, Koke, Griezmann and Juanfran named Atletico Madrid captains|
|Ronaldo out of hospital after illness|
|Fury: Beating Wilder and Joshua ´very easy´|
|Dickinson retires to take up academy coaching role|
|Cricket the ´sole focus´ for Stokes as he returns to England squad|
|Cheryshev moves to Valencia on loan|
|Mandzukic retires from Croatia duty after World Cup|
|Ben Stokes found not guilty of affray|
|Tottenham issue new stadium update and apology to fans|
|Chelsea flop Bakayoko moves to AC Milan on loan|
|Gabi urges Al Sadd team-mate Xavi to play on|
|Ronaldo leads UEFA Goal of the Season nominees|
|Federer: Djokovic could be caught up in US Open pressure|
|Ronaldo to Juventus a huge boost for Serie A – Matthaus|
|Werner would welcome Ozil Germany return|
|´Perfectionist´ Serena admits to ´unrealistic´ expectations in tennis and motherhood|
|Klopp praises Deschamps and his ´boring´ France|
|LaLiga 2018-19: Bale or Griezmann - Who will step into Ronaldo´s breach as Messi´s main rival?|
|Woods winning 15th major would be greatest comeback in sport – Faldo|
|Retiring Storm great Hoffman not giving up on Finals dream|
|Folau won´t change aerial approach in All Blacks showdown|
|Racism behind Sterling criticism, says ex-Arsenal star Wright|
|Eto´o joins Qatar SC following Ligue 1 links|
|UEFA Super Cup 2018-19: Atletico academy eclipsing Madrid, La Masia|
|UEFA Super Cup 2018-19: Should Real Madrid cash in on Modric?|
|Scintillating Serena sends warning, Azarenka survives opener|
|DeGrom strikes out 12, Mets hit 5 homers in win over Yankees|
|Djokovic needs nine MPs as Murray crashes out|
|Murray unsure of US Open readiness after Cincinnati exit|
|Van Dijk: Alisson making difference at Liverpool|
|Johnson saves eight MPs but Djokovic prevails|
|Federer anxious ahead of Cincinnati comeback|
|Tevez relishing Messi reunion|
|Ronaldo arrival has taken Juve forward in Europe – Nedved|
|Serena steamrolls Gavrilova in Cincinnati return|
|Packers QB Rodgers doesn´t regret criticising team-mates|
|Indians OF Martin recovering from life-threatening bacterial infection|
|Shoulder injury sends Royals starter Duffy to DL|
|Yankees place Sabathia on DL with right knee inflammation|
|Aubameyang urges Emery to capitalise on his ´spark´ with Lacazette|
|Anderson can play until he´s 40, says Bayliss|
|Keita living childhood dream after securing Inter switch|
|49ers to sign veteran RB Alfred Morris, Kyle Shanahan says|
|Arnaiz leaves Barcelona for Leganes in €5m deal|
|Tottenham´s move to new stadium delayed|
|Roosters-bound Hall suffers ACL injury|
|Murray suffers Cincinnati defeat to Pouille|
|No Cech mate - Arsenal goalkeeper hits back at Bayer Leverkusen|
|Halep first to seal WTA Finals spot|
|Veteran Carmelo Anthony pens one-year Rockets deal|
|Runners and Ryders: Poulter closes in on Team Europe spot|
|Gameiro presented by Valencia after departing Atletico Madrid|
|World Cup winner Kimpembe extends PSG contract to 2023|