Interesting pitching drill I found while surfing youtube. I guess this drill is teaching you brush interference.
[video=youtube_share;t2aI1ZXaC-s]http://youtu.be/t2aI1ZXaC-s[/video]
[video=youtube_share;t2aI1ZXaC-s]http://youtu.be/t2aI1ZXaC-s[/video]