An overall numeric grade only tells part of the story. TGA assigns four individual subgrades to every card it certifies, covering centering, surface, corners, and edges, and understanding each one gives a much fuller picture of a card's actual condition.
Two cards with the same overall grade can have very different subgrade breakdowns, and knowing what to look for helps collectors evaluate a graded card more intelligently.
Here's what each subgrade category measures.
None of this requires prior grading experience to follow, and the concepts apply the same way across every card type TGA grades.
Centering measures how evenly a card's image sits within its border, expressed as a ratio like 55/45 for front centering. This is often the most immediately visible subgrade to the naked eye, and it's frequently the deciding factor between a 9 and a Gem Mint 10.
Off-center cards straight from the printing process are common enough that perfectly centered pulls are genuinely rare.
Surface grading evaluates scratches, print lines, indentations, and other flaws across the card's front and back that aren't always visible without close inspection or raking light. A card can look flawless at a glance and still carry surface issues significant enough to affect its grade.
This is part of why professional grading catches things a casual buyer or seller might overlook entirely.
Protecting surface quality starts the moment a card is pulled, well before it ever reaches a grader. EVORETRO's Graded Card Sleeves protect a returned slab from further wear.
Displaying a top subgrade card properly matters too — EVORETRO's Transparent Display Stand keeps it visible without added handling risk.
Corner condition is one of the fastest things to degrade through normal handling, since corners take the brunt of contact when cards are shuffled, flipped, or removed from packaging. Even minor whitening at a corner tip can affect this subgrade noticeably.
Cards pulled directly from a pack and immediately sleeved tend to score highest on this subgrade compared to cards handled loosely first.
Edge condition covers the card's outer border along all four sides, evaluating for chipping, fraying, or roughness that's easy to overlook compared to more visible flaws. Edges can wear down through repeated sleeve removal or friction against other cards in storage.
Consistent, careful storage from the moment a card is pulled helps preserve edge quality just as much as it helps corners and surface.
A card's overall grade generally reflects its weakest individual subgrade, since a single significant flaw — even if every other category is flawless — holds the whole grade back. This is why a card with perfect centering can still land below a 10 if its surface or edges show wear.
Reviewing all four subgrades together, not just the overall number, gives collectors and buyers the clearest possible picture of a card's true condition.
Graders typically use magnification and controlled lighting to assess each subgrade category individually before arriving at an overall grade, a level of scrutiny that goes well beyond what a naked-eye inspection at home can catch. This is part of why a card that looks flawless to its owner can still come back with a subgrade lower than expected.
Understanding that this level of detail is standard practice, not an unusually harsh assessment, helps set realistic expectations before any submission.
When choosing between two copies of the same card at the same overall grade, comparing their individual subgrades can reveal a meaningful difference in actual condition. A card with stronger centering and surface subgrades, even at an identical overall number, may be the better long-term hold or display piece.
This level of detail is exactly why serious collectors and buyers dig past the headline grade before making a purchase decision.
Centering, surface, corners, and edges.
Centering is often the deciding factor, requiring 55/45 front and 75/25 or better back.
Yes, and the overall grade generally reflects the weakest one.
Yes, buyers often check subgrades alongside the overall number for a fuller picture.
Yes, a single weak subgrade can hold back an otherwise flawless card's overall number.
Subgrades tell the real story behind a card's condition. Browse EVORETRO's graded card accessories collection to protect and display your graded cards properly, subgrades and all.
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