Career
Her career high Women's Tennis Association singles ranking is 172, which she reached on August 9, 2004. Her career high doubles ranking is 357, set on February 9, 2004. In 2004, she helped the Thailand team gain promotion to World Group II, defeated the Number.1 Australian player and world Number.41 in three sets 6–2, 1–6, 6–1.
In 2005, she beat the Croatian world Number.96 Sanda Mamić in straight sets, 6–3, 7–6(1).
Thailand finally lost to Croatia 2–3, but remained in World Group World War II Viratprasert played the world Number.15 Nicole Vaidišová in the opening rubber match, but lost in three sets 6–3, 2–6, 0–6. But on the next day of play, she beat the world Number.45 Iveta Benešová 6–4, 6–4.
Viratprasert made her first appearance in 2010 and received a wildcard to the Ministry of Posts, Telegraphs & Telephones, France Pattaya Open, but lost to Sesil Karatantcheva in the first round 1–6, 5–7.