The five-time major champion will switch between the racquet and the pen until the book is done.
The 35-year-old is closing in on a Top-ten return.
The well-loved German opens up about a difficult campaign.
Former coach of Agassi and Hewitt will keep role as TV men's tennis analyst.
Frances Tiafoe takes his eye of the ball at a Challenger and has a classic reaction to his gaff.
Phone thief is no kryptonite to world No. 1 who says she ran him down to regain phone, concluding: "Superhero? Maybe? Or HELL YEA!"
The stars pop, fans clap thundersticks and flags fly with pride in the Fed Cup final preview video.
