8:47 A.M. PDT -- We're told the game was a Roc Nation charity event. Rihanna was scheduled to be there and Chris was supposedly a "surprise appearance."
Rihanna is ridiculous ... and thirsty like Moses wandering the desert.
She showed up in the front row at a charity basketball game Thursday ... eyes trained on ex-BF Chris Brown.
Now that she's with Drake again and not Chris Brown again ... you'd think she wouldn't fuel the fire. But then again, who are we kidding?
It's a special kind of insult to Karrueche ... who's back with Chris after being repeatedly humiliated by whatever continues to transpire between him and Rihanna.
Your move Karrueche.
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