Second week of patch 2.12 and Ruination Event. With no patch changes being announced the meta is expected to stabilize for the most past around the current values.

Valentino (Legna) Vazzoler


Number of (Ranked) games analyzed: 58667

by the Numbers
Patch 2.13 first week / Master players1,2
Characteristic N = 120,0433
Ranked 58,667 (49%)
Other 45,797 (38%)
to Scrap 9,867 (8.2%)
Friendly 5,712 (4.8%)
americas 54,511 (45%)
asia 19,606 (16%)
europe 45,926 (38%)

1 Max datetime recovered: 2021-07-28 20:59:58.216815 UTC from 2021-07-21 21:00:00 to 2021-07-28 21:00:00 UTC

2 EU Master players in the ladder: 918 while number of possible Master players recovered is: 916

NA Master players in the ladder: 1042 while number of possible Master players recovered is: 1045

ASIA Master players in the ladder: 394 while number of possible Master players recovered is: 395

3 Metadata from Friendly Matches (that aren't Bo3) is not recoverable, the value may not be perfect since I lack the starting time of the game. The amount of Games to still scrap is also an estimation based on the 'position' of the game


Play Rate



Region Play Rate
Relative Frequencies by Inclusion Rate of a Region
Region Freq Shard
America Asia Europe
Ionia 21.49% 21.92% 20.33% 21.61%
Shurima 21.48% 21.19% 21.05% 21.92%
Bilgewater 13.00% 13.82% 14.17% 11.77%
Noxus 11.08% 9.70% 9.89% 12.82%
PnZ 10.36% 9.64% 8.89% 11.62%
ShadowIsles 8.05% 7.64% 11.07% 7.10%
Freljord 7.38% 8.46% 8.00% 6.16%
Demacia 4.62% 5.07% 3.91% 4.52%
MtTargon 2.54% 2.56% 2.68% 2.47%

Play Rate by number of Cards



Region Play Rate
Relative Frequencies by number of times a Card within a Region is included in a Deck
Region Freq Shard
America Asia Europe
Ionia 21.13% 21.62% 19.41% 21.44%
Shurima 20.45% 20.27% 20.46% 20.60%
Bilgewater 14.69% 16.53% 15.30% 12.79%
PnZ 11.33% 10.18% 9.93% 12.96%
Noxus 10.17% 9.05% 9.36% 11.51%
ShadowIsles 9.13% 8.55% 12.32% 8.27%
Demacia 5.56% 6.07% 4.42% 5.59%
Freljord 5.15% 5.36% 6.09% 4.54%
MtTargon 2.39% 2.35% 2.71% 2.29%

Champions Combinations

Play Rates

In this section I provide the play rate of which combinations of champions (plus the regions) are used in a deck. The champions showed right before a game starts for example. Right now it’s a simple approximation of the archetypes played in the ladder as such information is not restrictive enough.



Day by Day

Highlisting the top10 most played decks (at the moment of the last game played).

Win Rates

Tie games are excluded

Meta Decks

Win rates of the most played combination of champions. Play Rate >= 1%


Top Win rates of the least played combination of champions. Play rate \(\in\) [0.1%,1%)1.

Match Ups

Match-up Grid

Just a different way to print the table of the MU grid, more an experimentation

Match-up Grid v2

The win rates on the grid are among the 10 most played champion combination.

Match-up Table

Filtered cases with less than 100 games

Deck Structure of the week

I don’t

Lulu / Zed

Viego (FR/SI)

Let’s start with Viego and the other star of this event: Akshan

Viego (SI/SH)

Let’s start with Viego and the other star of this event: Akshan

Viego (IO/SI)

How to read the table:
- Play rate: How often a card is included in this class of decks / the table is order by this column.
- 3/2/1 is the relative and absolute frequency of the number of copies in the decks that plays them
- Frequencies from 50% to 100% are colored from shades of green to white to identify more easily the highest values


LoR-Meta Index (LMI)

The LMI 2 is an Index I developed to measure the performance of decks in the metagame. For those who are familiar with basic statistical concept I wrote a document to explain the theory behind it: , it’s very similar to vicioussyndicate (vS) Meta Score from their data reaper report. The score of each deck is not just their “strength”, it takes in consideration both play rates and win rates that’s why I prefer to say it measure the “performance”. The values range from 0 to 100 and the higher the value, the higher is the performance.

Cards Presence

Play Rate

It seems that not even Twin Disciple can beat Sharsight

Top 3 Play Rates by Region

Forgotten Cards

Cards that couldn’t find place even in a meme deck.

Region Bilgewater Demacia Freljord Ionia MtTargon Noxus ShadowIsles
1 Strong-arm For Demacia! Feral Mystic Nimble Poro Fledgling Stellacorn Trifarian Shieldbreaker Sinister Poro
2 Silverwing Diver Entomb Shadow Flare Savage Reckoner Sap Magic
3 Shadowshift Affectionate Poro

Legal bla bla

This Meta Report was created under Riot Games’ “Legal Jibber Jabber” policy using assets owned by Riot Games. Riot Games does not endorse or sponsor this project.

  1. Min number of games 50, during the times a meta/ladder just changed.↩︎

  2. LMI - Early Theory↩︎