On 5 - 4 Isner goes up 40 - 0 .
On 5 - 4 Isner converts the first set point , for a final 6 - 4 in less than half an hour .
On 5 - 4 Isner goes up 40 - 0 and converts the first set point , for a final 6 - 4 in less than half an hour .