Career
Her highest Women's Tennis Association singles ranking is 342, which she reached on 10 June 2013. Her career high in doubles is 317, which she reached on 17 August 2009. She earned her best result yet in the 2011 Ministry of Posts, Telegraphs & Telephones, France Pattaya Open where she, as a qualifier, reached the second round.
She lost to top seed Vera Zvonareva, 6–1, 7–5.
Wannasuk fought hard as she was 6–1, 5–1 down. All of her singles titles are $10ks, 6 of her doubles titles are $10ks and 2 of the doubles titles are $25ks.
Singles (9–10)
Doubles (15–9).