Last updated October 17, 2026
Some links are affiliate links; we may earn a commission at no cost to you. When you click one and buy something, the retailer may pay Ground Up Baseball a small share of the sale. The price you pay is the same.
Banner, sidebar and in-page promotions are labeled "Sponsored". Some sponsored spots link to a retailer's regular website with no tracking while our application to that program is reviewed; once approved, the link becomes an affiliate link.
Glove and bat specs, ratings, certifications, pitch counts and bat rules come from official brand, league and certification sources, with a link and retrieval date. No advertiser can pay to change a spec, a rating, a rule or a league-legality result.
Sponsored spots on this site currently feature the programs below. This list is generated from our ad settings on every build.
| Advertiser | Network | Status |
|---|---|---|
| JustGloves | Refersion | Not active yet: plain link, no tracking |
| JustBats | Refersion | Not active yet: plain link, no tracking |
| Baseball Monkey | Partnerize | Not active yet: plain link, no tracking |
| Wilson | Impact (Wilson Sporting Goods) | Not active yet: plain link, no tracking |
| DeMarini | Impact (Wilson Sporting Goods) | Not active yet: plain link, no tracking |
| Louisville Slugger | Impact (Wilson Sporting Goods) | Not active yet: plain link, no tracking |
| Rawlings | CJ Affiliate | Not active yet: plain link, no tracking |
| Easton | CJ Affiliate (Rawlings) | Not active yet: plain link, no tracking |
| GameChanger | CJ Affiliate (DICK'S) | Not active yet: plain link, no tracking |
We don't run ad networks or third-party scripts. If you click an affiliate link, the retailer or its affiliate network may set its own cookie on its site to credit the sale. See our privacy policy.
One email for GloveCode, ArmRules, BatCode and BatRules: new glove and bat data, plus pitch-count and bat-rule changes. (Placeholder: signup is not connected yet.)