| Datum | Země | Název, adresa | Pořadatel |
|---|---|---|---|
| 21.6.2003 |  | AOW - Art of War 2 Kalispell, Montana, United States, United States | Art of War |
| 21.6.2003 | | ISCF - Cowtown Rumble 3 Overland ParkKansas City, Missouri, United States | International Sport Combat Federation |
| 21.6.2003 | | ISCF - Southeast Championships Valdosta, Georgia, United States | International Sport Combat Federation |
| 21.6.2003 | | ITC - Iron Tiger Challenge 1 Bellefontaine, Ohio, United States | Iron Tiger Challenge |
| 21.6.2003 | | KOTR - King of the Ring 6 Surfside InnVirginia Beach, Virginia, United States | King of the Ring |
| 21.6.2003 | | MC 7 - Maximum Combat 7 Lisbon, Ohio, United States | Maximum Combat |
| 21.6.2003 |  | MTBN - Pancration vs. Holland Zonnehuis, Amsterdam, Holland, Netherlands | Muay Thai Bond Nederland |
| 21.6.2003 |  | NNH - No Name Heroes 1 Zepp Sendai, Sendai, Miyagi, Japan | No Name Heroes |
| 21.6.2003 | | REF - Art of War La Villareal Convention CenterMcAllen, Texas, United States | Renegades Extreme Fighting |
| 21.6.2003 | | Shooto Holland - Open European Championship Schalkhaar, Holland, Netherlands | Shooto Europe |
| 21.6.2003 | | UCE - Round 4 - Episode 3 Salt Lake City, Utah, United States | Ultimate Combat Experience |
| 21.6.2003 |  | XFC 4 - Rumble in the Rink Cochrane, Alb Canada, Canada | Xtreme Fighting Challenge |