The United States will head for Tokyo with back-to-back men's basketball wins after accounting for Spain 83-76 in their final exhibition game in Las Vegas prior to the Olympic Games.

Team USA has had a far-from-ideal Olympics preparation, defeated by Nigeria and Australia in exhibition games last week and losing Kevin Love to injury and Bradley Beal due to health and safety protocols.

Gregg Popovich's side bounced back by beating Argentina on Tuesday and finished off their Las Vegas camp against the Spanish on Sunday.

Damian Lillard top-scored with 19 points with six assists for Team USA, while Kevin Durant had 14 points, two assists, two rebounds and two blocks.

Chicago Bulls guard Zach LaVine pulled off a series of dunks to put an exclamation mark on the performance.

Team USA are set to fly out for Tokyo on Monday, ahead of their Olympics opener against France on Sunday.

USA are grouped with France, Iran and the Czech Republic in men's basketball at the Tokyo Olympics where they are gold medal favourites.

In the women's USA defeated Nigeria 93-62 on Sunday to conclude their Olympic preparations, heading in as gold medal favourites too.