Eagle-eyed tennis fans spotted a key detail in footage of Nick Kyrgios' girlfriend which was taken as she watched him play against Rafael Nadal at Indian Wells on Thursday.
As Costeen Hatzi cheered Kyrgios on fron the stand as he battled the 21-time grand slam champion Nadal, a microphone pack could be seen attached above her back pocket.
Speculative fans and sports reporters took to social media to voice their theories as to why Hatzi would be mic’d up, with many believing it had something to do with a new tennis series being produced by Netflix.
On Thursday, reporter Graham Ruthven tweeted: "Nick Kyrgios' girlfriend is mic'd up for the Netflix docu-series, right?"
"She's wearing a wireless mic pack on her waist. Surely that's what that's about?"
The speculation led some fans to wonder whether it was the presence of the Netflix film crew that was the cause of Kyrgios's more-animated-then-usual performance during the match.
Netflix is currently filming the new series with producers and cameramen spotted at ATP and WTA events around the world recently, including at the Australian Open in January.
The series is touted as the tennis version of the Formula 1 documentary 'Drive to Survive', credited with boosting the popularity of Formula 1 worldwide.
Netflix is yet to confirm a release date and title for the up-and-coming series however has shared that the series will document this season's ATP and WTA tours as well as all four Grand Slam tournaments.
"The series will be the first sports program of its kind to provide an equal platform to the men's and women's competitors of the sport, in keeping with the equal stage they share throughout the year," Netflix said recently.
World No. 4 Stefanos Tsitsipas is the first player confirmed for the docuseries, the Greek tennis star saying, “I’m very privileged to be in it. I've watched their previous TV show, which was Drive To Survive. I instantly became a huge fan of F1. I'm extremely happy they're bringing this to tennis and making something similar in that sense.”
Earlier in the week, Netflix announced that it has linked up with the PGA TOUR and golf’s major championships for “an immersive documentary series following the lives and stories of top professional golfers across a season of high-stakes competition.”
High profile golfers who have committed to starring in the show include Collin Morikawa, Brooks Koepka, Dustin Johnson, Jordan Spieth and Sergio Garcia are among a number of high-profile golfers who have committed to participating in the documentary.
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