Sept. 15, 2012 // 9 p.m. ET; 6 p.m. PT (HBO PPV)
Thomas & Mack Center, Las Vegas
Chris Farina/Top Rank

All Grown Up

Julio Cesar Chavez Jr. may never match the exploits of his father, but he has proven he has the chops -- and size -- to be a threat to Sergio Martinez on Saturday.
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