Jason Estrada Boxing 360 signs heavyweight ‘Big Six’

Jason Estrada Boxing 360 signs heavyweight ‘Big Six’ NEW YORK  – 2004 U.S. Olympian Jason “Big Six” Estrada, one of the most decorated amateur boxers of all-time, has a new lease on his boxing career after undergoing career-changing foot surgery and signing a promotional contract with Boxing 360. “We’re very happy to sign a former…