Rafael Nadal: The 21-time Grand Slam champion

Jonathan Overend is joined by the former British player and tennis coach Dan Kiernan, former world number five Tommy Robredo, writer and journalist John Carlin plus the six-time Grand Slam champion Boris Becker. They reflect on the man that is now statistically the greatest male tennis player in history after winning the Australian Open to take his 21st Grand Slam. You'll hear stories of playing with Rafael Nadal, how the news was received in Spain and what happens next in Nadal's career.