- Kelly Clark is most dominant snowboarder in halfpipe history
- Clark targeting fifth Olympics in 2018, when she turns 34
- "I believe I haven't hit my full potential," she says.
- Current world No. 1 Chloe Kim is 15
(CNN)Kelly Clark is to women's halfpipe snowboarding what Serena Williams is to tennis. Put plainly, she's the most dominant athlete in the history of the sport.