Filmmaker Barney Douglas, director of the new Showtime documentary "McEnroe," joins Thirty Love host Carl Bialik to talk about how a non-tennis diehard came to make a film about John McEnroe, how New York City became a costar, the interview that got away, and which tennis figure he'd want to profile next. Thirty Love is back for a mini-season around the 2022 U.S. Open. Have feedback, a suggestion for a Thirty Love guest, or anything else you want to say? Email Carl at bialik@pm.me Music by Lee Rosevere: "Credit Roll" and "Glass Android."