Concepcion stops Leyva

By Eric Thomas: Panamanian Luis ‘El Nica’ Concepcion (19-1, 14 KOs) retained his World Boxing Association flyweight title tonight with a 4th round stoppage win over Roberto Leyva (26-10-1, 21 KOs) at the Arena Roberto Duran in Panama City, Panama. The Panamanian Concepcion, 24, flattened Leyva with a hard combination to the head in the 4th. The bout was immediately stopped at 2:11 of the round.