This Is The Greatest Fan At This Year's U.S. Open

It is nearing midnight on a Wednesday night in New York, but this young fan is still cheering wildly for American James Blake.

Blake had just earned a break to get back on serve in the fifth set of his second round match, and boy is this young fan excited. With his Captain America shirt and tennis headband, he is the fan of the tournament.

Who needs sleep?….

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