[3][4] Radachowsky accumulated 39 tackles, four interceptions, and ten pass deflections his senior year in 1983, earning AP second-team All-East and first-team All-ECAC accolades.
[3] Radachowsky also played baseball for the Eagles during his sophomore and junior years, and was the team's starting center fielder.
[7][8] He graduated from Boston College with a Bachelor of Science in marketing in 1984, and was inducted into the school's Varsity Club Hall of Fame in 2010.
[2][9] Radachowsky was selected by the Los Angeles Rams in the seventh round, with the 188th overall pick, of the 1984 NFL draft.
[11] On August 27, 1984, he was traded to the Indianapolis Colts for a 1985 eleventh round draft pick, which the Rams used to select Doug Flutie, who Radachowsky played with at Boston College.
[11] Radachowsky appeared in all 16 games, starting a career-high 12, in 1989 and returned a blocked field goal 78 yards for a touchdown.