Isner is just 9 - 6 on hard courts this year , a poor record for him .
Mannarino is n't in great form , and thus Isner should advance to the quarters like Isner did in Washington .
Isner is just 9 - 6 on hard courts this year , a poor record for him , but Mannarino is n't in great form , and thus Isner should advance to the quarters like he did in Washington .