MLB jerseys have smaller details than NFL product, which makes counterfeits easier to hide in photos. These checks focus on the parts that are hardest to copy.
1. Team lettering
The chest wordmark should match the official font, spacing, and arch. Fakes often stretch the arch or use a slightly bolder font. Compare against official product photography, not a social post.
2. Number and nameplate
Check the number font and the nameplate lettering on the back. The two should match each other and the official spec for that season.
3. Sleeve patches
Patch placement is a common failure: too high, too low, or the wrong patch for the season. Confirm which patches the team wore in the year the jersey represents.
4. Fabric and weight
Replica and authentic use different fabrics. A jersey sold as authentic that feels like a lightweight replica is a warning. Judge the fabric against the version being claimed.
5. Collar and button placket
The placket should be straight and evenly spaced. Fakes often have uneven button spacing or a collar that does not sit flat.
6. Tags
Look for the manufacturer tag, the league mark, and a wash tag with real content. Generic tags and missing care information are red flags.
7. Seller and returns
Buy from sellers you can identify and prefer listings with returns. Price alone is not proof, but a deep discount on a current star player's jersey usually means something.
This is an editorial checklist, not a professional authentication service. For collectibles, use a reputable authenticator. Paid links on this site may earn us a commission.