Neither the 33-year-old player nor his partner felt any symptoms, the statement said.
Four players Djokovic, Grigor Dimitrov, Borna Coric and Viktor Troicki tested positive for the virus after the event which saw little social distancing and packed stands.
The world number one’s coach Goran Ivanisevic also contracted COVID-19.
Players had embraced across the net, played basketball and even danced in a nightclub during the week of the first leg played in Belgrade.
Djokovic was widely criticised for hosting the tournament.
The Serbian star issued an apology, saying he was “so deeply sorry” that the tournament “caused harm”.
On Wednesday, the player donated more than 40,000 euros ($45,000) to Serbian town Novi Pazar which has been badly affected by the pandemic.
Serbia, with a population of about seven million people, has registered nearly 15,000 coronavirus infections and 281 deaths.