Klaus Träumer from SC Motor Jena qualified for the 1968 Mexico City Games with the East German team. In the preliminary round during the 1968 Olympics, East and West Germany played their only official international match, with West Germany winning 3-2. East Germany finished the tournament as a disappointing eleventh, which caused East Germany to drastically reduce financial support for hockey (field). Träumer was an alternate in 1964, but did not play any matches in Tokyo. He earned 34 international caps for East Germany between 1962 and 1968.