| World Wrestling Entertainment ( WWE ) |
www.wwe.com  |
| International Boxing Organization ( IBO ) |
www.iboboxing.com |
| International Judo Federation |
www.intjudo.eu |
| Ultimate Fighting Championship ( UFC ) |
ufc.com |
| Universal Boxing Organization ( UBO ) |
www.uboboxing.com |
| World Boxing Association ( WBA ) |
www.wbanews.com |
| World Boxing Council ( WBC ) |
www.wbcboxing.com |
| World Series of Boxing |
www.worldseriesboxing.com |
| WTF World Taekwondo Federation |
www.wtf.org |
