Ronald Johnson added with Roy Jones to Knockout card. Ronald Johnson (11-1) is known both for battling and advancing enormous boxing occasions that included Zab Judah, Joel Casamayor, Michael Grant, Hector Camacho Jr. furthermore, numerous other outstanding names in the game. Following a five-year rest from the ring he is back and centered around boxing.http://www.15rounds.com/ron-johnson-added-with-roy-jones-to-knockout-card/