 Krieger established himself as a top-ranked fencer competing in an All Star Midwest team against Canada, Mexico, Cuba, and the U.S. Sectional teams.He also represented the United States in the British-American matches in Toronto, where he was undefeated in the U.S. victory.Krieger won gold medals in team foil and team sabre and the team silver in épée at the 1951 Pan American Games in Buenos Aires, Argentina.