With the ATP Finals just a couple of days away, Catherine and David get together on The Tennis Podcast to preview all the major storylines and make some predictions.After Rafael Nadal’s withdrawal, Novak Djokovic and Roger Federer are heavily favoured to come through their groups, but who do Catherine and David think will join them in the semi-finals? Is Kevin Anderson the tournament’s dark horse? Can Marin Cilic overcome his recent habit of losing from a winning position? And might John Isner capitalise on his late-entry?Elsewhere, Grad Matt was on the ground at the O2 on media day, and he’s told David and Catherine all about what the players have been saying, including Federer’s comments about his scheduling and the developing ‘aggro’ between Alexander Zverev and Stefanos Tsitsipas.Novak Djokovic, meanwhile, has opened up in a rare newspaper interview with Simon Briggs of Telegraph Sport, part of which you can hear on the podcast. Why did Djokovic feel ‘guilty’ after having surgery? Was he surprised that he lost motivation to compete? And how has fatherhood changed him?Finally, the Telegraph’s Charlie Eccleshare gives his impressions of the Next Gen Finals in Milan. Which players stood out? Does the event offer a glimpse into tennis’ future? And which of the rule experiments stand a chance of coming into effect on the main tour? The Tennis Podcast is uploaded weekly throughout the year and daily at the Grand Slam tournaments. It is produced in association with Telegraph Sport. See acast.com/privacy for privacy and opt-out information.