Sirisanont is also one of three Southeast Asian swimmers, along with Malaysia's Alex Lim and Philippines' Miguel Molina, to train for the California Golden Bears in the United States, under head coach Nort Thornton.

[4][5][6][7] Shortly after his first Olympics, Sirisanont left his home nation Thailand to train for the Bolles School in Jacksonville, Florida, United States.

While playing for Bolles, he had achieved numerous medals and school records in both long-distance freestyle and individual medley, including his first ever title from the Bishop Moore Invitational in Longwood, Florida|Longwood.

During the Games, his nickname Nuk was echoing around the Hiroshima Big Wave Pool, when he swam with only 100 metres left to race against China's Xiong Guoming in the 400 m individual medley.

[3] At the 1996 Summer Olympics in Atlanta, Sirisanont competed in five swimming events, including his nation's place in the men's medley relay.

Because he made poor decisions to drop most of his events, including the 200 and 400 m individual medley, Sirisanont delivered his worst Olympic feat with a forty-first-place effort on the morning prelims, finishing in a time of 2:23.95.

[18] Following his graduation from UC Berkeley in the spring of 2001, Sirisanont still continued to train for the California Golden Bears, but made his decision to consider retirement.

[19] Sirisanont's appearance from a said tournament also signified his official return to the Thailand national team for the Asian Games in Busan, South Korea.

[28][29] Since his debut 1992, Sirisanont was among the swimmers who campaigned for their fourth Olympics, along with Carl Probert (Fiji), Derya Büyükuncu (Turkey), Martina Moravcová (Slovakia), Lars Frölander (Sweden), and two-time freestyle champion Alexander Popov (Russia), who later became an official IOC member.