What is OpScore?
OpScore is the DiamondOps composite rating system for MLB The Show Diamond Dynasty cards. It distills dozens of in-game attributes into a single number that tells you how good a card actually plays — not just how high the overall is.
Why not just use the card overall?
A card's overall rating in MLB The Show is a broad average of every attribute — even ones that don't matter for how the card plays in-game. A 97 OVR card with elite fielding but mediocre contact can rank higher than a 95 OVR card that rakes at the plate.
OpScore fixes this by weighting the attributes that actually determine in-game performance, scaled to the difficulty you play on. A card that dominates on All-Star may struggle on Legend — and OpScore reflects that.
What OpScore measures
Contact & Power
Hitting ability against both sides — the core offensive output.
Plate Vision
Pitch recognition and discipline. Critical at higher difficulties where the PCI shrinks.
Speed & Baserunning
Stolen base threat, extra-base stretching, and defensive range contribution.
Fielding & Defense
Arm strength, accuracy, reaction, and position-specific defensive value.
Pitching Arsenal
For pitchers: pitch repertoire quality, velocity, break, and control ratings.
Attribute weights are calibrated against competitive gameplay data and adjusted each year. The exact formula is proprietary.
Difficulty changes everything
OpScore is computed separately for each difficulty level: All-Star, Hall of Fame, and Legend.
On All-Star, the PCI is large and timing windows are forgiving — raw power and contact matter most. On Legend, the PCI shrinks dramatically and pitch speeds increase, making plate vision and pitch recognition far more valuable. A card that's S-tier on All-Star might drop to A or B+ on Legend.
The difficulty toggle
Throughout DiamondOps you'll see a small AS | HoF | Legend toggle near any OpScore display. Switching it recalculates every score on the page to show how cards perform at that difficulty. Set it to the difficulty you play on for the most relevant rankings.
Tier breakdown
Every OpScore maps to a tier from S+ (elite) to F (unusable). These tiers make it easy to compare cards at a glance.
Quirk uplift
Some Diamond Dynasty cards have quirks— special traits that activate in certain game situations (e.g. “Dead Red” boosts contact vs fastballs, “Unfazed” improves performance in high-pressure moments).
OpScore accounts for quirks by applying a +uplift bonus (or penalty) to the base score. Cards with game-impacting quirks score higher than their raw attributes alone would suggest — because they play better than the numbers show.
Rankings & position ranks
Every card receives two ranks per difficulty: an overall rank (compared to all cards) and a position rank (compared to cards at the same position). A card might be #150 overall but #3 at catcher — making it a must-start at a thin position.
Explore full rankings on the Rankings page.
How OpScore compares
| System | What it measures | Difficulty-aware? |
|---|---|---|
| Card Overall | Broad attribute average (SDS formula) | No |
| True Overall | Re-weighted overall (various community formulas) | Usually no |
| OpScore | Gameplay-weighted composite + quirk impact | Yes — per difficulty |
See OpScore in action
Browse the market, check rankings, and find the best cards at every position.