Novak Djokovic looks as if he has stepped in a time machine and taken us all back to 2015, such is the level of tennis he is producing in the second half of 2018. In the latest Tennis Podcast, Catherine Whitaker and David Law get together to look back on Djokovic's victory in Shanghai, where he didn't lose a set and never looked likely to. Who, when, where and how is anyone going to stop him? Or will his level inevitably drop?

The man he beat in the final - Borna Coric - has made major strides recently, and his journey is reviewed, and Roger Federer comes into view after a so-so week in which he reached the semis but went down comfortably to Coric. What would be the tipping point for Federer to call it a day? And why do people get so upset when anyone dares to bring it up? Well, we do it on The Tennis Podcast.

The latest Davis Cup frustrations are discussed, events on the WTA Tour in Hong Kong and Tianjin covered, and while recording the podcast, news breaks of Juan Martin del Potro suffering what sounds like a very serious injury.

The Tennis Podcast is produced weekly in association with Telegraph Sport, and daily at the Grand Slam tournaments.

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Unstoppable Djokovic Wins Shanghai; Delpo Devastation; Davis Cup Mess Continues