This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous.Find sources: "Watcharapong Klahan" – news · newspapers · books · scholar · JSTOR (October 2008) (Learn how and when to remove this message) The topic of this article may not meet Wikipedia's notability guideline for sports and athletics. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted.Find sources: "Watcharapong Klahan" – news · newspapers · books · scholar · JSTOR (July 2013) (Learn how and when to remove this message) (Learn how and when to remove this message)