"We have complete trust in our three goalkeepers...but particularly in Rene," Andreas Köpke told reporters ahead of Germany's friendly match against Argentina on Wednesday.
"Rene Adler is ahead in the race to be number one at the moment. He has played brilliantly in the internationals he has done so far."
Adler, 25, plays for second-placed Bundesliga side Bayer Leverkusen and has represented his country eight times. The other two goalies in the squad are Manuel Neuer from Schalke and Werder Bremen's Tim Wiese, who is currently injured.
He is expected to start the game against Diego Maradona's side in Munich.