In an interview to Tennis.com, Ivo Karlovic recalled when he defeated Roger Federer in the Cincinnati Open third round. The Croat prevailed in the decisive set tie-break and that was just the first time that Karlovic won a match against Federer.
“I was really happy. In that match with Federer, I was winning a lot of points on my second serve. He was struggling with returning them. That was the difference," admitted Karlovic. The 39-year-old definitely also got one of the best results of his career by defeating Novak Djokovic in the 2015 Qatar Open quarter-finals in Doha. "I remember on the day it was really windy," he said. "I was able to serve unbelievable in the wind and he was struggling also from the baseline.
He did not like my sliced backhand, so in the end, he was actually going to my forehand. I was playing really well that day. This could be my best win, but when I beat Roger in Cincinnati that was my first over a No. 1 ranked player.
So maybe that one is a little higher in my best victories”. He faced Rafael Nadal multiple times too. Does the Spaniard have the strongest mental strength? "That is difficult to say, because when I am serving well there is nothing they can really do, either the top guys or someone ranked 80 or 90.
If I hit an ace there is not much of a difference," concluded Karlovic who competed at the New York Open this week.