There "could have been better communication" in explaining the rules involved in Jannik Sinner's doping case, ATP Tour chairman Andrea Gaudenzi acknowledged Thursday. However, Gaudenzi said at the ATP Finals that anyone hinting that a double standard was applied because of top-ranked Sinner's status is "unfair because the rules have been the same.

Join Tanya Aldred for updates as Yannik Sinner looks to complete a sweep of his group by beating Daniil Medvedev. Preamble 18:01 Good evening! It’s day five of the ATP tour finals, the penultimate day of the round robin competition.

The chairman of the ATP Tour acknowledges there “could have been better communication” in explaining the rules involved in the doping case of top-ranked Jannik Sinner.