He was also present at the 1924 Olympics as a substitute player. Kreitz studied traditional sculpture at the Royal Academy of Fine Arts in Antwerp and created statues and portrait busts for numerous public spaces in Belgium and the Netherlands. After that he taught sculpture at the Antwerp Academy.
He won two medals at the Ice Hockey European Championships in 1924 and 1927, and finished 5th and 13th at the 1928 and 1936 Winter Olympics, respectively. At the 1927 European Championships Kreitz was the team captain and top scorer (7 goals in 5 games), and was selected as best player of the tournament. He won the Van Leriusprijs and the Prix de Roma (1932), and took part in the art competitions at the 1936 Summer Olympics.
