Official history
MLB performance desk
MLB has a record—and a hold.
Eight selections were released before their events and remain the only MLB rows that determine the official forward ROI. Twenty-one reconstructed rows add context, but never enlarge that claim.
Official forward record
The only MLB headline record.
The record is positive; the proof is incomplete. The sample is eight, no closing prices were captured, and the model is not currently authorized for live MLB publishing.
Separate evidence class
Reconstructed history stays in its lane.
What would strengthen the evidence?
Price discipline before volume.
Capture the same-outcome, same-book closing price; restore release timestamps; monitor ROI by market and price band; and require a forward sample before any gate is loosened.

