 In the ninth, Yarosz was stunned by a blow beneath his heart which caused him to clinch, and after the third had received frequent pounding to his midsection.Yarosz injured his right knee in the fourth round or possibly earlier, and had surgery two months later to repair it.After his loss to Risko, the legendary trainer Ray Arcel worked with Yarosz for months to rehabilitate his knee, heating and massaging it, and supervising his work with weights.