Flexibility and Suppleness - key to injury prevention and increased strength.
Something will tear if it's over stretched or over loaded beyond what it's done before. I played International Badminton for 13 years, including across the US. It's the sport with the fastest pace and fastest smash (217mph). And at the same rock climbed and cycle raced.
http://fasthing.blogspot.com/2008/08/fa ... smash.html
http://www.youtube.com/watch?v=cIYbsGYT4m4&NR=1
With movements ...