2006 Pro Natural World - WNBF
| Overall Winner Jonathan Harris | |
HeavyWeight | |
| 1 | Ben Tennessen |
| 2 | Rodney Helaire |
| 3 | Hugh Cotterell |
| 4 | Leroy Perry |
| 5 | Wesley Clarke |
| 6 | Walter Smith |
| 7 | Darin Steen |
| 8 | Uwe Bruckner |
| 9 | Michael Tryska |
| 10 | Isaac Scott |
| 11 | Panexce Pierre |
| 12 | Ralph Remy |
| 13 | Don Robinson |
| 14 | Solandro Lee |
MiddleWeight | |
| 1 | Jonathan Harris |
| 2 | Clarence McGill |
| 3 | David Hamlette |
| 4 | Brandon Greenwood |
| 5 | Ekow Wilmot |
| 6 | Mike Grant |
| 7 | Alexander Jackman |
| 8 | Oscar Reyes |
| 9 | Greg Pringle |
| 10 | Kyle Kroll |
| 11 | Rich Fitter |
| 12 | Delbert Hickman |
| 13 | Dail Davis |
| 14 | Luis Castillo |
LightWeight | |
| 1 | Luis Santiago |
| 2 | Brian Whitacare |
| 3 | Wendell Webb |
| 4 | Tony Ruffin |
| 5 | Joe Valentino (1) |
| 6 | John McGowan |
| 7 | Joe LoRusso |
| 8 | Patrick Kamacaj |
| 9 | Matt Viemeister |
| 10 | Bill Murphy |
| 11 | Joe Klemczewski |
| 12 | Michael Miller (4) |
| 13 | Akinobu Nakano |
| 14 | Juan Marquez |
| 15 | Sam Bergstein |
| 16 | Angel Hernandez |