Golf's Red Zone Challenge Book- Golf Instruction- Athlon Sports. In "Golf's Red Zone Challenge," Athlon has borrowed a term from football and applied it to that space on a golf course - 100 yards from the green and in - where you can make the biggest impact on your score. We believe we've created a program that golf has never seen, one that combines motivation to improve your short game with easy-to-follow steps for getting there. Here's our guarantee:...