How long ago did you come up with ZiPS?
Szymborski: The genesis of it was there’s a [person] who contributes to Baseball Think Factory named Chris Dial, and in the late ’90s, they were talking about how someone could make a projection system that’s very basic and get most of the way there, in a way kind of a primordial version of Marcel which is a tabulator.
Before 2002, I was thinking maybe I should try my hand at a projection system. At that time, Voros McCracken’s FIPS research was fairly new, so I wanted to [align my idea.] That’s why I made it rhyme with FIPS, and the Z stands for Szymborski, the second letter of my name. I mean, it’s just a little side thing that started. Then I decided to do hitter projections, because it seemed kind of stupid to do because there were not hitter projections. And then over time, as computers got faster, I could do more things. Over time, it became a pretty complex system… I’m pretty happy with how it’s worked out.
Do you think you have another ZiPS idea in you or do you think that’s going to be your big thing?
Szymborski: I dunno. I always kind of think of myself more as a writer than a statistics developer, but I have more ideas how to use it. I continually refine my aging models and long-term projections and the different things I can do with it. I certainly hope there are other ideas in me, but I don’t have those ideas yet. Hopefully they will develop over the next few years.