Baseball's First Verified Development Index.
The Bradley Development Index (BDI) combines traditional scouting with continuously verified player development.
Rather than replacing the baseball industry's trusted 20–80 scouting scale, the BDI strengthens it by tracking verified growth, projection, confidence, and developmental progress over time.
The result is a living player evaluation built on trusted information instead of isolated scouting reports.
A live BDI in the International Baseball Registry.
One of the first verified players in the International Baseball Registry.
Built on baseball's trusted 20–80 scouting scale.
- The BDI uses baseball's traditional 20–80 scouting scale.
- A player's official BDI changes only after verified development supports advancement to the next scouting tier.
- Development is continuously measured between grades.
Five questions. One complete picture.
The five components of every BDI.
These five measurements allow the BDI to tell a player's complete developmental story rather than simply assigning a static scouting grade.
Traditional scouting vs. the BDI.
- One point in time
- Subjective
- Individual evaluator
- Limited verification
- Difficult to compare globally
- Dynamic
- Verified
- Continuously updated
- Longitudinal player history
- Standardized evaluation
- Globally comparable
Verified BDI grades across the registry.
One Grade.
One Development Story.
One Trusted Record.
The Bradley Development Index transforms player evaluation from isolated scouting reports into a continuously verified developmental record. By combining traditional baseball scouting with verified data, projection, confidence, and longitudinal tracking, the BDI provides one standardized language for evaluating player development across international baseball.