Simone Biles, winner of 4 gold medals in Rio, serves as flag bearer for U.S. delegation
Bob Costas and Al Michaels to host 'Rio Gold' at 7 p.m.
Mike Tirico, Mary Carillo, and Ryan Seacrest will host NBC's coverage of the Rio Olympics closing ceremony from Maracana Stadium Sunday night - the final night of the Games of the XXXI Olympiad from Rio de Janeiro, Brazil.
Heather Cox and Lewis Johnson will serve as reporters.
Bob Costas and Al Michaels will anchor NBC's studio coverage beginning at 7 p.m. ET/PT with "Rio Gold," a look back at the most memorable moments and performances of Rio 2016, including Michael Phelps, Usain Bolt and the U.S. women's gymnastics team.
Simone Biles, who won four gold medals and one bronze in Rio, was selected by her teammates to serve as the flag bearer for the U.S.
The closing ceremony (8 p.m.) will feature the pageantry and local flavor of host country Brazil, as well as the parade of flags and athletes from countries that participated in the Rio Games. The ceremony culminates with a party featuring samba schools from Rio's world-famous carnival and the extinguishment of the Olympic flame.
Tirico is completing his first-ever Olympics assignment, while 13-time Olympic commentator Carillo hosts her third closing ceremony (Salt Lake City, Beijing). Seacrest, NBC Olympics' late night host in Rio, served as a host of the 2012 London Olympics closing ceremony, alongside Costas and Michaels.