All

From page 39 of the 2014 AMA SX rulebook: http://www.amasupercross.com/rules/pdf/2014%20SX%20Rulebook%20Ver%2012… [quote] e. AMA 250SX Regional Champions may defend their championship’s the following season, with the following clarifications: 1. Champions may ride either region the following year but must only compete with the no. 1 plate when defending in the region in which they won the Championship. 2. A rider that...