Very easy read(it's all pictures!)from Coach Matt Talarico on the base stealing stances of major leaguers. Not one of these guys is using a cross over step, and notice the shin angle of their right leg; They're setting themselves up to accelerate by driving back into the ground.
One of baseball's smartest minds, Mike Reinold, explaining why he doesn't like to use the sleeper stretch. Again, just because its the way baseball players have always done it doesn't make it right. We never ask any of our athletes to perform the sleeper stretch specifically for reason number 2 outlined in this article. There are better ways to deal with GIRD than this outdated stretch.