Also Friday, the AP learned from a second person that Phoenix Suns guard Devin Booker has given USA Basketball his commitment to play in Tokyo.
Beal was a candidate for the team that won gold at the Rio de Janeiro Games in 2016 and again for the U.S.
He joins a backcourt that will include Booker as well as Portland guard Damian Lillard, who said Thursday that he has several reasons for wanting to play — the chance to be coached by Gregg Popovich among them.
The Americans — bidding for a fourth consecutive Olympic gold medal — will convene for training camp in Las Vegas on July 6.