Ahead of the US Open, Sloane Stephens surprised a young boy when she showed up at Walmart to help him pick up new school supplies. The surprise was facilitated by "Uninterrupted" an athlete empowerment brand founded by Lebron James and Maverick Carter.

Stephens US Open run came to an abrupt end on Tuesday night when she fell in the opening round, 6-3, 6-4, to Russian qualifier Anna Kalinskaya. The world No. 10 struggled in her hard-court warm up tournaments; capturing only one match in her three U.S. hard-court tournaments.

"I'm just going to keep going," the 2017 US Open champion said. "There's a couple more tournaments left, I'm just going to try to do my best there and finish out the year decently."

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WATCH: Stephens
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WATCH: Stephens goes back-to- school shopping

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