Germany's Sami Khedira followed up UEFA Champions League success with Real Madrid in 2014 with a taste of FIFA World Cup glory the same summer. Who can do the same in 2018?
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Having played as Real Madrid won the 2014 UEFA Champions League, Sami Khedira had a bittersweet experience with Germany a few weeks later, pulling up injured during the warm-up before his country's FIFA World Cup final win against Argentina.
"I hurt my calf during the warm-up; I could have tried to play, but I had to put my team first," he said afterwards. "The moment I realised I wouldn't play was the most devastating of my career."
That slice of bad luck ensured that only eight players can still claim to have been on winning sides in European Cup and World Cup finals in the same summer.
European Cup-World Cup double winners
1974 : Sepp Maier, Paul Breitner, Hans-Georg Schwarzenbeck, Franz Beckenbauer, Gerd Müller, Uli Hoeness (Bayern München & West Germany)
1998 : Christian Karembeu (Real Madrid & France)
2002 : Roberto Carlos (Real Madrid & Brazil)
European Cup-EURO double winners
1964 : Luis Suárez (Internazionale & Spain)
1988 : Hans van Breukelen, Ronald Koeman, Berry van Aerle, Gerald Vanenburg (PSV & Netherlands)
2012 : Fernando Torres, Juan Mata (Chelsea & Spain)
2016 : Cristiano Ronaldo, Pepe (Real Madrid & Portugal)
A handful more endured bittersweet Khedira-like experiences. Wim Kieft lifted the 1988 European Cup with PSV Eindhoven but did not make it off the bench with the Netherlands in the 1988 UEFA European Championship final. Real Madrid's Nicolas Anelka met the same fate with France in 2000, while team-mate Christian Karembeu fared slightly worse – he was an unused squad member in the finals of both the 2000 UEFA Champions League and UEFA EURO 2000 (though he had been on the pitch to win both the UEFA Champions League and the 1998 World Cup two summers before).
Who can win a European Cup-World Cup double this summer?
Neuer (GER), Ulreich (GER), Süle (GER), Hummels (GER), Javi Martínez (ESP), Rafinha (BRA), Boateng (GER), Rudy (GER), Alcántara (ESP), Ribéry (FRA), James Rodríguez (COL), Tolisso (FRA), Kimmich (GER), Lewandowski (POL), Müller (GER), Wagner (GER)
Mignolet (BEL), Lovren (CRO), Gomez (ENG), Flanagan (ENG), Alexander-Arnold (ENG), Milner (ENG), Henderson (ENG), Lallana (ENG), Moreno (ESP), Can (GER), Firmino (BRA), Salah (EGY), Mané (SEN), Solanke (ENG), Clyne (ENG)
Casemiro (BRA), Marcelo (BRA), Kovačić (CRO), Modrić (CRO), Navas (CRC), Benzema (FRA), Varane (FRA), Kroos (GER), Hakimi (MAR), Cristiano Ronaldo (POR), Asensio (ESP), Carvajal (ESP), Ceballos (ESP), Isco (ESP), Llorente (ESP), Mayoral (ESP), Nacho (ESP), Ramos (ESP), Vázquez (ESP)
Fazio (ARG), Perotti (ARG), Nainggolan (BEL), Alisson Becker (BRA), Bruno Peres (BRA), Gerson (BRA), Juan Jesus (BRA), Defrel (FRA), Gonalons (FRA), Abdullahi (NGA), Kolarov (SRB)
By national team
Fazio (Roma), Perotti (Roma)
Mignolet (Liverpool), Nainggolan (Roma)
Rafinha (Bayern), Firmino (Liverpool), Casemiro (Real Madrid), Marcelo (Real Madrid), Alisson Becker (Roma), Bruno Peres (Roma), Gerson (Roma), Juan Jesus (Roma)
James Rodríguez (Bayern)
Navas (Real Madrid)
Lovren (Liverpool), Kovačić (Real Madrid), Modrić (Real Madrid)
Gomez (Liverpool), Alexander-Arnold (Liverpool), Milner (Liverpool), Henderson (Liverpool), Lallana (Liverpool), Solanke (Liverpool), Clyne (Liverpool)
Ribéry (Bayern), Tolisso (Bayern), Coman (Bayern), Benzema (Real Madrid), Varane (Real Madrid), Defrel (Roma), Gonalons (Roma)
Neuer (Bayern), Ulreich (Bayern), Süle (Bayern), Hummels (Bayern), Boateng (Bayern), Rudy (Bayern), Kimmich (Bayern), Müller (Bayern), Wagner (Bayern), Can (Liverpool), Kroos (Real Madrid)
Hakimi (Real Madrid)
Cristiano Ronaldo (Real Madrid)
Bernat (Bayern), Javi Martínez (Bayern), Alcántara (Bayern), Moreno (Liverpool), Asensio (Real Madrid), Carvajal (Real Madrid), Ceballos (Real Madrid), Isco (Real Madrid), Llorente (Real Madrid), Mayoral (Real Madrid), Nacho (Real Madrid), Ramos (Real Madrid), Vázquez (Real Madrid)