PHILADELPHIA – Karolina Kowalkiewicz could be in the final years of her fighting career. Motherhood is on the horizon for the UFC strawweight contender, and when she makes the choice to have children, she will hang up her gloves for good. Kowalkiewicz (12-3 MMA, 5-3 UFC), who meets Michelle Waterson (16-6 MMA, 4-2 UFC) on Saturday at UFC on ESPN 2, said her partner has been pushing to have children
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