ARCHIVE-AWARE NEWS · rewritten from the original topic
The short version
Spring and exhibition baseball is a genuine market and a poor evidence base. Rosters are unsettled, starters are building toward a season rather than competing, and the sample of games is small. The numbers are real; the conclusions people draw from them often are not.
Why the sample is small and noisy
Exhibition games are played under modified conditions: pitch limits, planned substitutions and split-squad lineups. A player's statistics may be compiled across a handful of at-bats, and a pitcher may face a lineup that will never appear together again. Small samples produce extreme-looking results by chance alone.
What spring numbers can legitimately tell you
They can indicate a role: who is being stretched out as a starter, who is working in relief, who is being tried at a new position. They can flag a physical concern if a player is conspicuously absent. They are much weaker as evidence about how a player will perform once the season begins.
How to read a preseason line
Treat a preseason price as a statement about uncertainty rather than about form. Compare it against the regular-season market for the same teams, note how much the number moves, and be sceptical of any conclusion that rests on a handful of appearances.