Well, one thing to add. I think the stats will show Zhirkov never played ten games in a row. His main misfortune was the same as many others who have come to Chelsea: the competition for places is sufficiently high they never got the chance to establish themselves. Zhirkov was a bit like Ferreira - you could put him on and he probably wouldn't let you down, might even win you a penalty, but you'd always prefer to have a Lampard playing. Or even without Lampard, Zhirkov's obvious positions were where Ashley Cole or Malouda were playing, and they were better.
Good luck to him with his new club and everything, but stories like this don't cut much ice.