Korolev had knee problems since boyhood (http://en.wikipedia.org/wiki/Osgood%...latter_disease
), he fighted with it many years, but it seems he had been defeated finally
Korolev has unofficial site in Russian (http://evgenykorolev.net/
), unfortunately it hasn't upgraded last two years...
Also he acted as a model and face of some cosmetics companies in Russia last years (http://photo-men.com/tennisist-evgenij-korolev-foto