Flushing Meadows USA, 26.08. – 08.09.2013 / GS hard
Kaia lost to Kerber in straight sets 0:6, 4:6
Kaia's own words: "it is a pity that I lost the first long game, it would have helped me to get into the match a little… After that game it felt like she got more and more confident and I was more and more insecure. So the first set went. In the second set I managed to get into the match in the last minute and this time could not manage to turn things around."