Roller derby portraits

These photos was shoot during the Sports Shooter Academy X in march.
If you don't know about the Roller derby sport.
You can read about it here:
http://en.wikipedia.org/wiki/Roller_derby

Soccer J-södra - Värnamo

Rugby (Cal State Fullerton - U.C. Irvine march 2)

Some images shoot at Sports Shooter Academy in march.

Soccer J-södra - Örgryte

Speedway (Elit Vetlanda - Vargarna)

These two photos are a combination with trying a new position and playing around with shutter speeds to try doing something a little bit different from more regluar Speedway photos.
Shoot with 1D mkIV 400mm f 6,3 and a shutter speed of 1/200.