Stats Explanation

Sample sizes matter!

Even though I'll let you see low sample size stats, don't put too much stock into them.

Card Stats

tl;dr Use mulligan impact for what to keep in the mull, and drawn impact for what to include in your list.

Impact: How much this card event affects the winrate. The base calculation is: Card (Event) Winrate - Deck Winrate

Mulligan Impact

Main Mulligan Stat


    
    Mulligan Winrate - Deck Winrate

Includes both cards kept in the mulligan and those gotten after. This is your go-to metric for determining what to keep.

Sample Size: Mulligan Count

Drawn Impact


    
    Drawn Winrate - Deck Winrate

Useful for measuring card power over the course of a game to decide what to actually include in your decklist.

Sample Size: Drawn Count

Not Drawn Impact

Negative is Better!


    
    Drawn Winrate - Deck Winrate

A test metric helpful for specific mechanics (like Tradeable). Unlike other stats, it's not per copy, it's overall. Can help highlight 1 vs 2 card deck biases.

Sample Size: Not Drawn Count

Kept Impact


    
    Kept Winrate - Deck Winrate

Mainly useful in direct comparison with Mulligan Impact to spot highly situational, specific scenario keeps.

Sample Size: Kept Count

Archetype Card Stats

Unlike deck card stats, archetype card stats are not calculated looking at the archetype as a whole, but rather built from deck card stats This lets archetype card stats be useful! Since it removes bias from the deck a card is included in

💡 Tip: Highlight a deck's individual cards by opening its card stats page, then select Archetype Card Stats in the subtitle.

Appears when a highlighted card falls short of the minimum required sample size.

Meta Stats

Based strictly on the deck tracker user's perspective, meaning it's subject to deck tracker bias

Deck Stats

Stats for exact card lists, including sideboards. Just like meta stats, these metrics reflect the perspective of the player running the active deck tracker and is subject to deck tracker bias.

Matchups

Matchup analysis requires different archetype classification. Because your opponent's exact deck is unknown, archetyping must rely on cards played in the game. This archetyping is used for both perspectives in the matchups tab. This makes differentiating similar archetypes more difficult and requires a data collection buffer period after new cards/patches

Filters

Live Calculation Warning: This icon appears next to parameters calculated in real-time. Unaggregated requests consume heavy processing power and may time out. Please try to avoid heavy usage of such features. Note: Personal stats are always calculated live; if there is a warning triangle there you can ignore it.

As Class Modal

Displays class winrates as the class for games matching your current filter set.

Example: Filter for decks containing Reno, then toggle As Class. You'll see individual class winrates when piloting a Reno deck (e.g., a 40% Rogue score means Rogues running Reno win 40% of their games).

Vs Class Modal

Displays performance metrics matching your filters against each opposing class. A 20% for Rogue here would mean that Priests that don't run Aman'Thul have had a 20% winrate vs Rogue

Example: Filter for Priest and exclude Aman'Thul, then toggle Vs Class. You will see how well Priests without Aman'Thul perform against specific opponent classes.