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THE MAG.COM PRESENTS: ALL WORLD POWER RANKINGS

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BEST QB MENTORS EVER? HARD TO IGNORE MIKE HOLMGREN

[Ed's note: Not sure what All-World Power Rankings is? Please click here.]

The current issue of ESPN The Magazine has a piece on Steve Clarkson, a NFL washout who became one of the most powerful QB coaches around. QB mentoring is an important gig that can often advance your career. Consider: Brad Childress basically made himself a head coach for his work with Donovan McNabb. Who are the best ever at shaping the men under center? Let's take a look.