As a professional sportswoman, Ajunwa originally played football for the Nigerian women's team and was a member of "The Falcons" during the Women's World Cup in 1991, but as she was constantly benched, her skill was seldom used. Of her short-lived football career Ajunwa has stated "I've not regretted the decision [to leave football] because I've made my mark in athletics. I could have continued with football but there was a particular coach. He knew then that I was the best player in the team but he decided to keep me on the bench throughout every match so I left the team's camp. She played as an attacker.