Bob Alejo is the strength and conditioning coach of the Oakland Athletics. This video from the strength power hour is from the 2007 NSCA sport-specific conference and he gives some baseball training tips, drills and exercises that address these areas of hitting:
- how to improve bat speed
- rotational exercises to increase bat speed
- weighted bat-implement training (ie overload-underload)
You can check out more on Bob Alejo at his website.