Oklahoma City:

In April 2005, the Oklahoma City Skate Park at Wiley Post Park was renamed the Mat Hoffman Action Sports Park to recognize Mat Hoffman, an Oklahoma City area resident and businessman that was instrumental in the design of the skate park and is a 10-time BMX World Vert champion. In March 2009, the Mat Hoffman Action Sports Park was named by the National Geographic Society Travel Guide as one of the "Ten Best."

Please answer a question about this article. If the question is unanswerable, say "unanswerable". Which BMX Champion had a park named after them in Oklahoma City?
Mat Hoffman