Anecdotal evidence, but I just watched a bunch of Heyward's highlights (mostly 2015 on), and literally every well-driven ball he hits, his front foot is flat. There may be something to this. Is there a reason why he rolls his ankle? Like he's not balanced/shifting too much or quick from back to front when he swings? Just curious to know what would cause it and if it's somewhat "fixable". It’s not necessarily the rolled ankle as much as it is where his foot is pointed. He almost need to pronate his right foot so he doesn’t fly open. That swing is made for the 4-3.