Small Sample Sizes in Bat Tracking

In the first few days of the season, I have heard (and made!) a number of references to swing speed changes. As fantasy players, we are always looking for that leg up, the first piece of actionable data that we can act on to make a move that no one else is ready to make. Bat speed certainly seems like early useful data. If a guy has gained or lost bat speed, that might not show up in the results yet, and even if it does, we know better than to overreact to a guy hitting one more or one less homer than we might have expected.
But bat speed is subject to small samples sizes, as well. I looked into two specific examples of names that came up this weekend and – in both cases – found reasons to pause before acting.




