Green won a gold medal at the 2016 Rio Games, but Lillard has never officially played for U.S. basketball.
Trail Blazers guard Damian Lillard and Warriors forward Draymond Green have committed to U.S. basketball and will compete in this summer's Olympics in Tokyo, according to The Athletic's Shams Charania and Joe Vardon.
The roster is expected to be finalized by late June, and training camp for Team USA starts July in Las Vegas with Spurs coach Gregg Popovich.
The group stage of the Olympics tourney will be held from July 25 to Aug. 1, and the knockout stage will be from Aug. 3 to Aug. 7
Green, 31, was part of the 2016 U.S. team that won gold in the '16 Rio games and is coming off another standout year defensively. He was named to the NBA's All-Defensive First Team for the fourth time and was a finalist for the Defensive Player of the Year Award. He finished the season averaging seven points, 8.9 assists, 7.1 rebounds and 1.7 steals per game.
The Warriors (39–33) missed out on the playoffs after losing to the Lakers in the play-in game.
Lillard, 30, has never officially competed for U.S. basketball but expressed his interest in doing so earlier this season. His teammate CJ McCollum took his name out for consideration earlier this year.
Lillard is coming off yet another stellar season where he averaged 28.8 points, 4.2 rebounds and 7.5 assists to lead Portland (42–30) to the No. 6 seed. His team was bounced out of the first round of the playoffs by the Nuggets in six games.
More NBA Coverage: