We trained a lot of fighters together, and Starling Castillo was one of the fighters that we had here. So I’m real familiar with Castillo and his style,” Barrientes said. “Bryan's never sparred with him, but we pretty much trained him for a couple of his fights. [...] Being here in Vegas, we have a lot of that kind of style. There's a lot of Cubans and Dominicans and similar styles for [Flores] to use to get ready for this fight.”