Author John Wertheim - "Serena Williams will not be on a farewell tour"

John Wertheim has written one of the standard works for tennis fans, "Strokes of Genius - Federer, Nadal, and The Greatest Match Ever Played", the reappraisal of the legendary 2008 Wimbledon final between Rafael Nadal and Roger Federer. Wertheim is currently in Roland Garros as an expert for the Tennis Channel. A visit to the set.