In 1961, Mildenberger and Ahsman (of Sweden) who both climbed the European ratings, met in Germany. Ahsman, with an equal style of Ingemar Johansson, jabbed Mildenberger around for three rounds, when he suddenly hit him with his version of "Hammer of Tor", a straight right.
Mildenberger crawled the floor three times but managed to grab and hold on to Ahsman's left arm, who's elbow got damaged. Coming out for the fourth round, Ahsman retired with a left arm injury.
Ahsman's arm never really recovered, something he suffered from in his next bout, ko'd by Young Jack Johnson.
Mildenberger moved up to a toprated contender and competed in the world title elimination tourney after Ali's "retirement".
Though beeing rated nr. 2 German All Time Heavyweight, Mildenberger seems to have suffered of a "glass jaw", troughout his career.