Isner bounced from Australian Open's first round
Reilly Opelka, ranked just 97th, earned his first victory in a main-draw match at a major by edging John Isner in four tiebreakers at Melbourne Park.
Reilly Opelka, ranked just 97th, earned his first victory in a main-draw match at a major by edging John Isner in four tiebreakers at Melbourne Park.
