LAS VEGAS (AP) — This is not how USA Basketball expected to open its Olympic summer.

Nigeria probably didn’t expect it, either.

If there was any expectation of invincibility for the Americans heading into the Tokyo Olympics, it’s already gone — after Nigeria beat the U.S. 90-87 on Saturday night, an international shocker pulled off by a roster primarily filled by little-known NBA players that found a way to beat a group of All-NBA, All-Star and max-contract performers.

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