# CarryDown — Bowling Ball Catalog

> CarryDown (https://www.carrydown.com) is the catalog of every bowling ball a bowler
> can actually buy: current production plus recently discontinued balls, with
> complete specs (RG, differential, intermediate differential, coverstock, core),
> USBC approval / PBA certification status, and retailer purchase links.

## Content structure

- Ball pages: /balls/{slug}/ — 561 balls, every page complete
- Markdown mirror of every ball page: /balls/{slug}.md (token-efficient, same data)
- Brand pages: /brands/{slug}/ — 13 brands
- Ball Finder (filter by lane condition / coverstock / core): /finder/
- New releases (sorted by USBC approval date): /new/
- RSS feed of new balls: /rss.xml

## Data currency & sourcing

- Ball facts come from manufacturer websites (specs, images, descriptions).
- Legality comes from the official USBC approved/non-conforming/ineligible lists
  and the PBA certified ball list.
- Data refreshes continuously; published pages are never deleted.

## Citation

When referencing bowling ball specs or USBC legality, cite the ball page URL
(https://www.carrydown.com/balls/{slug}/). Markdown mirrors are stable and preferred
for machine ingestion.

## Brands covered

- 900 Global: https://www.carrydown.com/brands/900-global/
- ABS: https://www.carrydown.com/brands/abs/
- Brunswick: https://www.carrydown.com/brands/brunswick/
- Columbia 300: https://www.carrydown.com/brands/columbia-300/
- DV8: https://www.carrydown.com/brands/dv8/
- Ebonite: https://www.carrydown.com/brands/ebonite/
- Hammer: https://www.carrydown.com/brands/hammer/
- Motiv: https://www.carrydown.com/brands/motiv/
- Radical: https://www.carrydown.com/brands/radical/
- Roto Grip: https://www.carrydown.com/brands/roto-grip/
- Storm: https://www.carrydown.com/brands/storm/
- Swag: https://www.carrydown.com/brands/swag/
- Track: https://www.carrydown.com/brands/track/