By Sean Jones: Welterweight contender Jaron Ennis’ strength & conditioning coach Rob Acosta believes Errol Spence Jr is making a blunder in facing Danny Garcia on November 21 without the benefit of a tune-up. Acosta wants Spence to face 39-year-old former WBA welterweight champion, Luis Collazo, in a warmup fight. It’s not happening, though, seeing […]