BDD: Rookie Phenomenon?

At Baseball Daily Digest, I debunk Gary Cohen’s myth that there have been a lot more rookie starters this year than in years past.

I was linked to a blog entry by Rob Neyer (thanks, BBTF!). In it, Rob talks about Mets broadcaster Gary Cohen claiming that nearly 15% of all starts made by pitchers this season have been from rookies, more than at any other time since “rookie” became an official adjective in the baseball vernacular. The discussion at BBTF attempts to answer Rob’s question, “Why all the rookie starters?”

Good points were made throughout the discussion, but that 15% kept eating at me — it seemed too high.