Germany and Poland's second-string sides played to a lackluster 0-0 draw on Tuesday that gave Germany coach Joachim Loew few insights into possible World Cup candidates.
Germany began with eight newcomers and used four more as substitutes in a match that had little passion.
Because of various club commitments, both teams missed their top stars. The upcoming German Cup final meant that a dozen Germany players were missing, as well as Poland striker Robert Lewandowski.
From Loew's 30 players in the preliminary World Cup squad, only 10 were in Hamburg. Not all of the newcomers are even in the preliminary squad.
Loew is expected to cut four of five players from the 30-man squad before the team travels to a training camp in northern Italy later this month.
After the match, Loew gave no hint about who might be cut.