The protagonist of John Le Carré's new novel "Agent running in the field" is a confirmed player of badminton (club champion), and as such makes his introduction in the book.
Rereading the fascinating "The spy and the traitor" by Ben Macintyre, I am struck by the fact that Oleg Gordievsky, the eponymous spy and traitor, was a badminton player. There was an attempt to recruit him to MI6 with a female badminton player but this approach failed.
I wonder whether this was a coincidence or a deliberate reference in JlC's book to real life events.
Macintyre's book is, of course, essential reading for all fans of JlC, to read how things are done in the real world.