 On August 29, he hit Bill Wilson in the fourth inning of a 14–3 win against the Athletics.In the ninth inning, Athletics pitcher Marion Fricano, who had a reputation as a head hunter himself (two days prior, he ended the Chicago White Sox's Cass Michaels' career with a beanball), retaliated and threw at Gromek's back.Gromek charged the mound, causing both dugouts and bullpens to empty.