Mental toughness baseballs winning edge paperback december 19 2006 by karl kuehl author john kuehl author casey tefertiller author 46 out of 5 stars 29 ratings working from a combined vast experience the authors break down the elements of mental toughness into a package that is easy to understand for players managers . Working from a combined vast experience the authors break down the elements of mental toughness into a package that is easy to understand for players managers coaches and parents their goal is winning baseball they show how every at bat or pitch is a test particularly as players advance to higher levels. Mental toughness baseballs winning edge kindle edition by karl kuehl author john kuehl author casey tefertiller author 0 more format kindle edition 45 out of 5 stars 18 ratings. Mental toughness baseballs winning edge kuehl karl kuehl john tefertiller casey 9781566637237 books amazonca