In 1980, Petroni signed with the Buffalo Stallions of the Major Indoor Soccer League.
In the summer of 1980 he played in the National Soccer League with the Buffalo Blazers.
The Pride folded at the end of the season and Petroni had trials with several MISL teams before signing with the Kalamazoo Kangaroos of the American Indoor Soccer Association.
[3] After retiring Petroni became Director of Coaching at the Athletic Flames Football Club in Kentucky.
In February 1993, the University of Louisville hired Petroni to coach the men's soccer team.