Brate Lee ! Even Janko was able to defeat Nole at WTF 2011, he was just there to be seen.
He battled 3 sets to beat Berdych before winning only 4 games vs Ferrer so I am not so sure. I knew he was not at the top of his game at that time.
I don't believe at current form, Ferrer will be able to beat Nole but anything can happen in a tennis match