Identifying the Ideal Candidate(s) for the Four-Man Outfield
On Monday, I aimed to identify the ideal candidate for the five-man infield, inspired by the radical defensive alignment implemented by Ben Lindbergh and Sam Miller of the Sonoma Stompers in their new book, The Only Rule Is It Has to Work. I’ve since finished reading the book, and discovered Lindbergh and Miller also deployed the five-man infield’s cousin: the four-man outfield. A follow-up only makes sense.

The Stompers play a four-man outfield against the Pacifics’ Jake Taylor in San Rafael. (Source)
The boxes to check for our five-man infield were this: lots of ground balls, lots of ground ball hits, ground balls sprayed all over the infield, fly balls with predictable tendencies (either extreme pull or extreme oppo).
For our four-man outfield, it’s essentially the inverse. We want all of the following to be true of our batter:
- He hits a bunch of air balls
- He sprays those air balls all over the outfield
- He has very predictable ground-ball tendencies
I didn’t use OPS on fly balls as a box to check because OPS on fly balls includes homers, and those can’t be defended against anyway. Remove homers, and the sample gets real noisy, and to me, it didn’t help us in our search. The hitters we’ve identified ended up being good hitters anyway.
So, the hitter that appeared at the very top of our five-man infield spreadsheet was Howie Kendrick, and he checked every box. Made plenty of sense. He was the only hitter to check every box, and I was a bit surprised there weren’t more. Spoiler alert: I’m not totally convinced by any of our four-man outfield candidates. At least not as convinced as I was about Kendrick. But it’s grounds for some interesting discussion nonetheless!