Originally Posted by ark_28
Isner did not turn pro till he was 22 as he played on the NCAA so he would likely have longer on thr pro tour to make a mark!
His serve is his main weapon obviously its a world class shot but when in the zone this transfers to the rest of his game and he does play an "all out attack game" check out his 4th set v Federer last year, that was unplayable both with serving and returns! Raonic is talented but I am yet to see any evidence that he can produce that quality of tennis as yet
If Isner wasn't American no-one would be talking about him ever.