Erhard started out as a full back before being used as a half back by the mid-1950s. He then settled in the center half position by the end of the 1950s.
Although Erhard did not play in the 1954 World Cup, coach Sepp Herberger toyed with the idea of changing his defense by adding Erhardt as the left back in the final game against Hungary instead of Werner Kohlmeyer, but eventually decided to keep the same line-up as in the semifinal against Austria.[4] Herberger proved his tactical acumen by moving Erhardt to central defense in early 1958. In this new stopper role, Erhard proved to be a stand-out for Germany during the 1958 FIFA World Cup and remained Germany's standard stopper until his retirement from international play in September 1962. Between 1959 and 1962, Erhard had captained West Germany 16 times.
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