Britney Spears' Kids -- Globetrottin' In L.A.

They've played for popes, presidents and even Whoopi Goldberg ... but this weekend, the Harlem Globetrotters got to pull out some of their best tricks for Britney Spears' kids.

Sean and Jayden James -- who look A LOT like their dad Kevin Federline these days -- got to meet some of the players before their big game at Staples Center in L.A.

We're told Britney wasn't at the game -- but her father was ... so the kids got some quality time with grandpa.

As for the game itself, the Globetrotters took on the Washington Generals ... and won.

Stupid Generals ... they just can't pull it together!!!!

BTW -- sweet Doug Martin jersey!