Tuesday, April 14, 2020
How do fielding systems work?
It starts with identifying for every batted ball the assignment of those plays based on whether they are outs, errors, or base hits.
- For outs, it is relatively straightforward: whoever is the first touch fielder is assigned the play. It's not 100% true, but it's close to that. (An example of where it would not be is when a 1B pulls down an errant throw. So in those cases, we transfer ownership from first-touch to last-touch.)
- For errors, it is relatively straightforward: whoever is awarded the error is assigned the play.
- For hits, it's a bit more complicated. I started writing it out, but it started to become complicated. So then I had the idea to do a flow chart. Hopefully, the chart below makes it easy enough to follow, without it being overwhelming.
Next time, I'll come up with examples. And then after that, show you how the expected out rates are established.
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