Reilly Opelka News
Rafael Nadal is now 18-0 to start the season and if he can win his fourth title in the California desert, he will move into a tie with Novak Djokovic for the most Masters 1000 titles with 37.
He held serve easily throughout and one break in each set was enough, clinching victory when Opelka sent a service return long.
Isner dropped only one point on his first serve and broke his Slovakian opponent three times on the outdoor hardcourt to advance.
The 21-year-old American paved the way for the victory by successfully challenging what Schnur thought was an ace at 7-7 in the final tiebreak.
Towering 20-year-old Opelka, playing in his first ATP level tournament of 2018, fired 17 aces past world number eight Sock to cap a day of upsets.
World number one-ranked junior Taylor Fritz defeated countryman and number five-ranked Tommy Paul, 6-2, 6-7 (4), 6-2 to claim the US Open boys` singles title.
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