[3][4] He moved to the Cleveland Cobras for the 1979 season before signing with the San Jose Earthquakes of the North American Soccer League.
In February 1983, the Fort Lauderdale Strikers signed Kadupski after losing Dan Canter and Bruce Savage to Team America.
[5] He did appear in one indoor game in February, netting two assists,[6] but remained an unused substitute during the Strikers' outdoor season.
He spent the 1983-1985 Major Indoor Soccer League season with the Los Angeles Lazers.
Many of the students he has mentored has gone on to play professionally and many now coach in college while others are enjoying rewarding business careers.