radwanski earned five caps with the u.s. national team in 1985. his first cap came in a february 8, 1985 tie with switzerland. on may 26, 1985, he played in a 1986 fifa world cup qualification match, a 1–1 tie with costa rica in costa rica. however, he did not enter the return game in torrance, california in which costa rica defeated the u.s. and knocked them out of contention for the finals. his last cap came in a 5–0 loss to england on june 16, 1985.