Ichiro recorded his 4,000 hit in professional baseball, 2,722 of which have come in the Major Leagues. That is a lot of hits, way more professional hits than I have, and should be applauded.
Some will say the stat is diminished by the fact that Ichiro spent the first nine years of his career playing in Japan, where the pitching isn't as good. To anyone who says that, I respond, "Have you ever watched a Phil Hughes start? A Joba Chamberlain relief effort?" Check and mate.