Chuck Spieser fought as a light-heavyweight at the 1948 Olympics, winning one match. He was also an alternate at the 1952 Olympics but did not compete. Spieser turned professional shortly after the Helsinki Olympics, winning his first pro fight on a decision over Rufus Berry in September 1952. He fought for 10 years as a pro, compiling a career record of 21 wins, 6 losses, and 1 draw. He was named Progress Fighter of the Year in 1955 by Ring Magazine. In 1957 he fought in an eliminator series for the light-heavyweight title but was knocked out by Tony Anthony. He basically retired in 1958, but tried to make a comeback in 1962, although the Michigan Boxing Commission would not give him a license. He did manage one final bout in June 1962, when he won by TKO over Carl Boarman.