Namajunas all business entering Waterson bout

Strawweight contender Rose Namajunas has never engaged in 12 or 15-round boxing matches like Ray Mancini did in his heyday, but she’s had her share of battles leading into her Saturday co-main event against Michelle Waterson. And she understands what the Boxing Hall of Famer says about going through a fight with someone: Once you go through a fight with someone, you know them better than anyone else — spouse, mother, sibling, it doesn’t matter. As Mancini said, “I knew wh