He participated in the 1984 Los Angeles Olympics, but did not qualify for the finals. By 1986, Suzuki was one of the top ten 100m backstrokers in the world. At the 1987 Pan Pacific Swimming Championships, he blasted out to a lead with his underwater dolphin kicks in the 100m backstroke but faded to a third place finish. While his underwater dolphin kick strategy was beginning to draw more attention as a viable strategic tool, it had its share of doubters. Suzuki's upset victory at the 1988 Olympics introduced the underwater dolphin kick strategy to swimmers around the world.
After his retirement, Suzuki studied at Juntendo University Graduate School where he earned his Ph.D in researches and analysis of water exercise, lifestyle, habit and health conditions. He was also a visiting researcher to the University of Colorado at Boulder, and a guest coach at Harvard University.
He is currently a head coach, a member of the Japan Olympic Committee, a member of the Competitive Swimming Committee, Japan Swimming Federation, executive member of the World Olympians Association, executive member of Japan Olympians Association, a board member of the Japan Anti-Doping Agency, and a committee member of the World Anti-Doping Agency Athlete Committee. In 2009, he was elected as a board member of Japan Swimming Federation to be in charge of open water swimming, lifelong sports, and traditional Japanese swim methods.
He often appears on Japanese TV and radio programs in Japan as a commentator for sports. He has also published several books about swimming, sports science, and health.