Yarosz lost the both the NBA and NYSAC middleweight title to Eddie Babe Risko who defeated him on September 19, 1935 in Pittsburgh in fifteen rounds before a crowd of 25,000. Risko knocked Yarosz to the mat twice for counts of nine in the sixth and seventh rounds, and several judges gave Yarosz only the first round. Yarosz made his best showing in the eighth but did not appear to win any other round on points. 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.