Rosario pitched a shutout in his four round unanimous decision over previously undefeated Marc Misiura.
Rosario was able to showcase his boxing skills that made him an amateur star in his native Puerto Rico. The 23 year-old Rosario won every round and came home with the victory by scores on all three judges’ scorecards to raise his record to 5-0. Misiura is now 2-1.
Rosario is promoted by Top Rank.
Sunday night in Cleveland, junior middleweight Charles Conwell stopped previously undefeated Juan Carlos Rubio at 2:39 of round three of their scheduled 10-round bout.
Conwell of Cleveland is now 16-0 with 12 knockouts.
Conwell is promoted by DiBella Entertainment and Holden Productions.
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