Iroha started his career in Nigeria, scoring the first ever goal in the newly professional Nigerian league in 1990 for
Iwuanyanwu Nationale, who went on to win the league that year. Iroha was originally a
midfielder before national coach
Clemens Westerhof converted him to play
left back. His club career in Europe was largely unsuccessful, and Iroha was
allocated to
San Jose Clash in 1996. Iroha ended up playing in the inaugural MLS match against D.C. United, and is credited with the league's first-ever assist. The next season, he was traded to
D.C. United, where he won the league title but was dropped to comply with salary restrictions. He entered negotiations with the team to re-sign his contract, but they were halted after Iroha was called up to the World Cup squad for Nigeria. After a move to Spanish side
Elche CF in 1997, he moved to
Watford in December 1998, playing ten games for the
Hertfordshire side. A problem with
bunions forced him to the sidelines, and he retired in March 2000. ==International career==