Despite missing more than 48 combined points per game from players who were out, the Suns bolted to a 73-47 halftime lead.
The Suns proved too hot for Thunder as they were defeated by a scoreline of 115- 97 in the NBA fixture at Footprint Center.
Deandre Ayton had 19 points and 11 rebounds, and Booker scored 24 as the Suns won their fourth consecutive game.
Team leaders Devin Booker and Monty Williams preached patience as the league investigates the situation focusing on Robert Sarver.
Ayton is eligible for a five-year, 172.5 million dollar extension. He was an essential piece in Phoenix's playoff run last season.
Phoenix star Devin Booker confirmed on his Twitch channel that he has tested positive for COVID-19 and is set to miss training camp.
Kevin Durant led Team USA past France, 87-82, on Friday with 29 points as the Americans secured their fourth straight gold medal.
Giannis Antetokounmpo dominated the NBA finals by averaging 35.2 points, 13.2 rebounds and five assists per game.
The Milwaukee Bucks pulled out a tough 105-98 victory over the Phoenix Suns on Tuesday night to win their first NBA Championship in 50 years.
Giannis Antetokounmpo and the Milwaukee Bucks welcome Devin Booker, Chris Paul and the Phoenix Suns to Fiserv Forum for Game 6 of NBA Finals.