In men's doubles, and of Croatia defeated compatriots and 6-4, 3-6, 10-6.
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Djokovic 1-6, 6-3, 6-1 Khachanov def.
Watch the video above for more about this breakout star.
Millman 6-4, 6-7, 6-3 A Zverev def.
But his new team couldn't be more hyped, including LSU teammate Jarvis Landry.