Billie Jean King maintains a warm, highly respectful professional relationship and friendship with John McEnroe, rooted in their shared history as iconic American tennis legends who left an indelible mark on the sport. Both figures have frequently shared broadcast spaces, advocated for gender equality and sports development, and participated in tennis diplomacy events over the decades. While they both possess strong, outspoken personalities, King has consistently expressed deep admiration for McEnroe's brilliant tennis mind, unmatched tactical understanding of the game, and his evolution into one of the sport's most articulate and entertaining analysts.