By Jhonny Gonzalez
Trainer Jeff Mayweather arrived in Panama over the weekend to begin the second stage of training for Celestino Caballero, who challenges Jonathan Barros for the "regular" WBA featherweight title on June 18 in Mendoza, Argentina. Mayweather was training Caballero for the first stage of camp in Las Vegas, and then Caballero traveled back home to a few days before Mayweather arrived. Caballero was being trained locally until Mayweather arrived. The two men will leave together to Argentina on June 12 to get adjusted to the country and take part in some pre-fight activities to promote the bout.