I had some trouble find any info on Saiyok prior to seeing him fight in Holland. It turns out Saiyok used to fight under the name Saiyoknoi Sakchainarong. He rose through the ranks capturing several titles including one from Rajadomnern.
Apparently it all came crashing down when he lost his title to Singmanee Sor. Srisompong. I think it’s the same Singmanee who was previously at Chuwattana and is currently at tiger in Phuket. There’s a lot of controversy around the fight as many believe Saiyok threw the fight.
Promoters wouldn’t touch him and he was forced to leave the sport to make ends meet. Prior to his comeback he was selling fruit for a living. (badass muaythai fruit)
He’s back on the warpath and looks as if he’s got something to prove. He’s won all of his 14 fights (9 KO) and is scheduled to fight Souwer and Petrosyan later in the year.