Video: Opelka flustered by Brooksby's play, wonders aloud how Djokovic beat him

The Antwerp European Open kicked off this week, with one of the opening round matches featuring an all-American clash between Reilly Opelka and Jenson Brooksby.

With each man familiar with his opponent's game, it was Opelka who appeared confounded as he was unable to find answers to Brooksby's game. The towering American became so flustered that after losing another point to his #NextGen opponent, he pondered aloud how World No.1 Novak Djokovic was able to win a game against the 20-year old during their first round US Open clash last month.

Brooksby would go on to win this match 6-4 6-4, impressing the crowd even more as he was able to break the thunderous Opelka serve.