On January 18, 2020, Unified World Champion Julian “J-Rock“ Williams battled Jeison Rosario in a super welterweight unification bout, live from at The Liacouras Center in Philadelphia, Pennsylvania. Despite entering the fight as a massive underdog, Rosario defeated Williams via fifth-round TKO. Rosario's record improves to 20-1-1 (14 KOs). This fight was broadcast live on FOX as part of the Premier Boxing Champions Series. (Thumbnail image by Stephanie Trapp) Visit for more inf
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