Colt Cosgrave of the Tsuu T'ina Nation wagon is covered in mud during the Rangeland Derby Chuckwagon final day at the 100th Anniversary of the Calgary Stampede Rodeo in Calgary, Alberta, July 15, 2012.[Photo/Agencies]

Jason Glass (C) of Shaw GMC Chevrolet Buick, Troy Dorchester (L) of Fireside of Cochrane and Doug Irvine of B & R Eckel's Transport compete in the Rangeland Derby Chuckwagon finals at the 100th Anniversary of the Calgary Stampede Rodeo in Calgary, Alberta, July 15, 2012. [Photo/Agencies]