Her only defeat in a kickboxing ring was in an exhibition match at Sporthallen Zuid in Amsterdam in October 1994, when she fought male Muay Thai fighter Somchai Jaidee, who knocked her out in the second round.

After winning her first 14 fights, but failing to secure a match with Christy Martin, Rijker stepped away from boxing in 1999 to pursue a career in Hollywood.

Each woman was guaranteed $250,000 (U.S.), with the winner receiving an extra $750,000; however, on July 20, it was announced that she had ruptured an Achilles tendon while training for the fight; recovery time was estimated to be 4–7 months.

[9] She remains busy giving lectures and seminars to athletes and people from all walks of life to perform their best, while she maintais her top physical form and a strict diet.

[10] Rijker once again gained media attention in June 2013, when she worked in the corner of female boxing challenger Diana Prazak in her WBC super featherweight title bout against local champion Frida Wallberg in Stockholm, Sweden.

This event sparked controversy about the level of the provided medical attention and reignited debates about banning boxing in Sweden.

[4] In 2014, Rijker was part of the inaugural class of the International Women's Boxing Hall of Fame in Fort Lauderdale, Florida.