Katchanov is the Russian Karlovic. I've seen him at some Challenger event a few years ago, the name of the event escapes me, but he is massive.
According to his ATP profile he played one Futures match in 2012, but that's all until St Petersburg in Sept this year. http://www.atpworldtour.com/Tennis/Players/Kh/K/Karen-Khachanov.aspx?t=mr
I see he was seeded 12th in US juniors but went out in 2nd round, also went out 2nd round at Wimbledon.
ATP report just says this: Former champion Janko Tipsarevic was beaten on Wednesday in the Kremlin Cup by Bank of Moscow.
Wild card Karen Khachanov, 17, defeated the third seed and 2011 titlist 6-4, 6-4 in 77 minutes to become the youngest quarter-finalist of the season. In July, he won the European Junior Championships in Switzerland.