Literary Nonfiction. Sports. Roger Federer is a modern obsession. He is one of those few athletes--like Muhammed Ali, or Usain Bolt--who has transcended his sport. His long career has seen him win the most Grand Slam singles titles of any man in history, while amassing untold wealth, and a heroic reputation. But why does Federer matter so much to so many people? In ROGER FEDERER: PORTRAIT OF AN ARTIST, Christopher Jackson considers Federer's place...