Rear leg bend is a topic of much discussion. Some coaches have disputed the fact that to achieve maximum straight-line momentum, pitchers do not push off the pitching rubber. Rather they pull their front hip toward the catcher. Examining the pictures above, it seems relatively clear that the pitcher’s rear leg indicates, due to flexion, that force will be applied toward second base trying to accelerate the body forward. If a pitcher moves toward the plate with an extended rear leg, it would seem they are not using all their available muscles to create force toward the plate.
From an article I have found
do you think the bold is true?
Randy Johsnon, brandon marrow, Ryan Pope and others don't bend there back leg to much and get great MPH I think that bold section is a bunch of crock.
What do you think?
1st part of article called Stage 3 bent leg