An interesting note came up in a recent game thread.  Our pitchers seem to throw fewer changeups than one would expect.  To see if this is my imagination or possible real, I looked at the fangraph data for players that changed teams and had reasonable sample sizes with the cards and other teams.

No pitchers appear to be throwing more changeups with the cards than their other teams.  Where multiple numbers are listed is one entry per year.  I marked a few (ss) for small sample.

Looper, Pineiro, Wells, and Marquis all threw about the same percentage with the cards as their other teams.  However, Lohse, Wellemeyer, Villone, and Franklin all appear to be throwing fewer changeups as a cardinal.

I don't have an explination for this.  Only theory I have is the changeup isn't a groundball pitch which is a focus of our team.  It hower is a pitch to contact pitch. 

The one concern I would have is the changeup is the pitch that puts the least stress on the arm.  By throwing more other higher stress pitchers this increases the chance of fatigue and injury.