I was initially a fan of the "grow the arms" proposal. Now I'm not so sure. First of all, pitchers get hurt. You could have a stud arm in the minors and one injury can derail the entire career. Second, some pitchers just never end up as good as they are expected to be: see Hayden Penn, Matt Riley, and now Chris Tillman. They may have the build, arm strength, velocity, but just don't make it. Third, some pitchers can develop unexplained velocity loss that makes them very hittable. In this category, you can put Brian Matusz, and Chris Tillman.
Maybe you have to "grow the bats" and buy the arms. Yes, a high-priced free agent pitcher can be an injury risk, and very expensive. But a proven MLB pitcher that has withstood the test of time might be the better route to take. He will have already demonstrated consistency, tendency toward good health, durability, and maintained velocity and accuracy.
The storebought rotations of New York and Philadelphia seem to be doing pretty well.
"Grow the bats, buy the arms!"


