Wgtd's The Morning Show With Greg Berg

In the wake of tennis great Rafael Nadal's retirement announcement, we replay this conversation with sportswriter L. Jon Wertheim about his book "Strokes of Genius," which examines the 2008 Wimbledon men's singles final- in which Nadal edged Roger Federer in one of the greatest matches ever played. Also- an excerpt from Patrick McEnroe's book "Hardcourt Confidential."