Gavrilova and Sock are 2010 US Open Junior champs.

Jack Sock is the 2010 US Open Junior Boys’ singles champion. Sock, a native of Lincoln, Neb., used timely serving and a clutch third-set lob to defeat fellow American Denis Kudla, 3-6, 6-2, 6-2. The US Open is Sock’s first title on the ITF Junior Circuit, but he is no stranger to the winner’s circle. [...]

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