 Yarosz defended the Pennsylvania version of the middleweight title on April 6, 1934 against former world middleweight champion Ben Jeby, winning in a twelve-round points decision in Pittsburgh.Yarosz was most effective with right hand smashes to the jaw and body of Jeby, who was never given the chance to fight inside where he usually excelled.The "Pittsburgh Press" gave Yarosz nine rounds, with one to Jeby and two even.