Sportswriter Joe Posnanski joins Thirty Love host Carl Bialik to talk about his recent essay reflecting on Novak Djokovic's defeat of Roger Federer in the Wimbledon final, why his view on the greatest-of-all-time debate has evolved, how much he'd like to cover tennis full-time, and what it was like getting beaten by Joe McEnroe.

Music by Lee Rosevere: "Credit Roll" and "Glass Android."