After a busy day in which all four of the men’s quarterfinals and two of the women’s quarters were played, the question on everyone’s lips was ‘what was wrong with Novak Djokovic’.Listeners to The Tennis Podcast will know that it has been a recurring conversation over the past 12 months, and if anything, this latest episode - a straight sets defeat to Dominic Thiem - was even more mystifying.So, what is wrong with Djokovic? Did he, as John McEnroe suggested in commentary on Eurosport, ‘tank’ in the third set? Or, are we damning Thiem with faint praise after registering his first ever win over the former World No.1? Either way, what should Djokovic do from here?The Tennis Podcast team also talk about Andy Murray’s hard-fought win over Kei Nishikori, and the size of the task he will face against an in-form Stan Wawrinka in the semifinals. Who do presenters Catherine Whitaker and David Law think will win that one?They also talk about Rafael Nadal’s serene progress, the wonder... See acast.com/privacy for privacy and opt-out information.