AMA SBK: Cardenas Concerned About 'Unstable' Knee

AMA Superbike rookie Martin Cardenas suffered a heavy fall in Friday's AMA Pro Superbike qualifying session.

Source: http://moto-racing.speedtv.com/article/ama-sbk-cardenas-concerned-about-unstable-knee/

Willi Krakau Rudolf Krause Robert Kubica Kurt Kuhnke Masami Kuwashima