World Boxing Council (WBC)/The Ring middleweight champion and Argentina's favorite son, SERGIO "Maravilla" MARTÍNEZ, opened up his Miami training camp yesterday and held an intense, two plus hour open media workout before a throng of media ahead of his upcoming world title defense and the most eagerly anticipated boxing event of 2014 against three-division world champion and the Pride of Puerto Rico, MIGUEL COTTO - taking place on June 7, at the "Mecca of Boxing," Madison Square Garden and will be produced and distributed live by HBO Pay-Per-View®, beginning at 9:00 p.m. ET / 6:00 p.m. PT.