Playing at Phuket's Thanyapura sports complex after it was decided to move the tournament away from the political protests in Bangkok, Pruchya kept King – older by 14 years – running from side to side and it was only the young Thai's unforced errors that prevented the margin from being much wider.
It has been a hard tournament for King. Although Hong Kong brought four players to Phuket only two have played – King and the even older (35) Ognian Lolev.
This was King's third match in three days. Kolev faces his third this afternoon when he meets 21-year-old Nuttanon Kadchapanan.
Match result 6-4, 6-1, 6-2 to Pruchya.