The two top finishers in the event will earn berths in Japan, to be decided in the semifinals on February 7 in Los Angeles.
Rapinoe's comments were accompanied by a graphic showing fists raised through the interlocking rings -- under the crossed out words "kneeling, hand gestures, signs."
David Haggerty, an American who is the president of the ITF, and Yasuhiro Yamashita, president of the Japanese Olympic Committee, were also elected at the IOC session in Lausanne.
The World Anti-Doping Agency on December 10 banned Russia for four years from major global events, including the 2020 Tokyo Olympics and the 2022 World Cup in Qatar, over manipulated doping data.
But the biggest cheers of the night were reserved not for Bolt, but J-pop boy band Arashi and Japanese rugby captain Michael Leitch.
The 33-year-old, who triumphed in the 105kg division, was disqualified after a reanalysis of his urine sample revealed a positive test for testosterone.
Opening the facility, Prime Minister Shinzo Abe hailed its "top-level universal design" and "harmony with its surrounding environment."
Tahiti lies 15,700 kilometres (9,750 miles) from Paris but was chosen because it offers near-guaranteed surfing waves in the summer months.
The IOC Executive Board last week approved the list of 30 athletes nominated by National Olympic Committees.
Infantino will be officially put forward as a candidate to be a member in January, when he will have to face a vote from the over 100 current members of the IOC.
Doctors have warned the 2020 Games could see deadly medical emergencies as athletes, volunteers and spectators face the sweltering Tokyo summer.
The French Polynesian island of almost 200,000 inhabitants is a full 15,700km (9,755 miles) and a 23-hour flight away from the French capital.
The competition schedules had also been revamped to facilitate the support of National Olympic Committee officials and coaches to the athletes, as Sapporo is located 800km to the north of Tokyo.
He said there were no "objective obstacles" to the "vast majority" of Russian athletes fully participating in the Olympics.
Construction is 90 per cent complete at the four-storey Aquatics Centre and is due to be finished on schedule by the end of February.