Some young talents are growing and mastering step by step, it is a
difficult path to the top. Regularity is important, many good players have
good days and bad days, but performance must be mantained, more or less.
Karjakin still needs time, he has showed excellent results many times, and
bad results other days. In his match against Nakamura in Mexico, he was
smashed by Hikaru, but it is not indicative yet, we need wait to see the
next confrontations. I was tempted to add Francisco Vallejo, a notorious
strong young Spanish player, but he is irregular sometimes, you can see
fantastic performances followed by relatively poor results, although he
has some extraordinary merits, Vallejo is the only player in the World
that has beated Deep Blue in a match, in an exhibition by IBM.