Baseball · Athletics
Mason Barnett rookie cards
Every Mason Barnett line on the Topps checklists of the products we track, grouped by product. Lines with the RC chip carry Topps' Rookie tag.
- Products
- 2
- Card lines
- 6
- Rookie-tagged
- 6
2026 Topps Update Series Baseball
Release October 14, 2026. 1 lines from Topps' checklist (downloaded , PDF).
| Section | No. | Team |
|---|---|---|
| 1991 topps baseball autograph cardsRC | 91B2-MBA | Athletics |
2026 Topps Allen & Ginter Baseball
Release October 7, 2026. 5 lines from Topps' checklist (downloaded , PDF).
| Section | No. | Team |
|---|---|---|
| base cardsRC | 35 | Athletics |
| base cards i mini variationRC | 35 | Athletics |
| allen and ginter framed relics mini size iiRC | FMR-MBA | Athletics |
| allen and ginter relics full size bRC | FSRB-MB | Athletics |
| mini baseball autographs iRC | MA-MBA | Athletics |
Lines are joined by name within baseball, so two players with the same name would share this page. Odds and box formats are on each product page. This page lists cards, not prices, and does not say what to buy. See all rookies by player.