Career
He made his American Federation of Labor-Congress debut late in the 1992 season and was a regular fixture in the Melbourne midfield in 1993. He also kicked 21 goals for the season. Kowal however spent much of his career at Melbourne as a defender and up until 1997 was selected regularly in the seniors.
His 1996 season, in which he played all 22 games, is remembered for a physical confrontation he had with a Richmond runner and their coach Robert Walls during a match.
Both Kowal and Walls were fined after the incident. From 2000 to 2005, Kowal played once more for Claremont and spent a period of time as club captain.