Matsuzaka didn't know any of the hitters other than the famous Japanese guys, nor has he pitched in MLB, or played on an Amercian speaking team, nor played with MLB strikezones, as they are a bit different than in Japan, and he played against weaker lineups with different types of hitters than powerful major-leaguers, and he's only 26. If that doesn't make him a Rookie, then I don't know what the f*** would.