The UFC has announced that they have tested all competitors at UFC On Fuel TV 8: Silva Vs Stann and all tests came back clean with the exception of Alex Caceres and Riki Fukuda. UFC President Dana White has recently taken a harder stance on performance enhancing drugs, and it is abundantly clear they are”¦The post Alex Caceres and Riki Fukuda Fail UFC On Fuel 8 Drug Tests appeared first on Fighters.com.