Justin Spizman, author of "Coach: The Greatest Teachers in Sports and their lessons for us all." Filling out the hour is an excerpt from my interview with L. Jon Wertheim, author of "Strokes of Genius: Federer, Nadal, and the Greatest Match Ever Played." The interview includes comment about Rafael Nadal's uncle, Antonio Nadal (his first tennis coach), who is one of the coaches profiled in Spizman's book.