Note: Since I still lack too much knowledge regarding line-up building I tried to analyze the results but I lack the confidence about their meaning. So aside for the obvious takes this document will be mostly dry and left to the end of those able to navigate the data. I’ll try to improve by next Seasonal.

Data

Before starting this report on the latest Seasonal (Guardian of the Ancient, which started on 2021-06-19) I need to forewarn that it’s pretty much impossible to determine the exact amount of games played during the “Open Rounds”. It’s possible to have an approximation not nothing more since we don’t know the precise amount of forfeits. What we can say for certain is the amount of the max number of games possible:

  • Max number of games: 1024 players for each shard * 9 rounds * 3 games (Bo3) / 2 (as a match is already between two players) -> 1.3824^{4} games at most.

Games recovered:

  • EU Shard: 7555
  • NA Shard: 7588
  • Asia Shard: 2053

While the methodology to collect the data was always the same, there seems to be some kind of problems(?)/error(?) with the Asian Shards numbers. Sadly this was to be expected for the most part. To be eligible to participate one either had to win a slot through the LastChanceGauntlet or by being a top700 Master player but during the cut-off it turns out there were about ~465 Asian Master players. I don’t know if Diamond players completed the remaining spots but overall this is pretty much the best I can do for this Seasonal

Regarding the EU and NA Shards the coverage is no less than 46.8%, 44.4% respectively, but most likely higher. Such value can be inferred by looking at the results obtained for each player.

  • Sample size: 16973
  • Last update at 2021-06-28 12:05

At the moment I’m writing, if I have the data of a match in almost all cases I have coverage of all games played.

There 70 matches whose I have only 1 games (16 in round 1 and 20 on round 9) and 10 matches where I have 2 games but I know three games were played.

Uncomplete Matches Distribution

Figure 1: Uncomplete Matches Distribution

Regarding the players and their line ups, of 1024 players from each shard the data covers “at least 1 of the decks” for 1006 / 1024 in EU and 1014 for NA. On the other hand, the complete coverage for a player line up is 870/1024 for EU and 898/1024 for NA. All tops32 are included in this sample.


Line Ups

Let’s start with the easy stuff: by looking at the most played LineUps.

Sadly the tournament setting is showing the limitation of my approach to define archetypes by looking at champion + regions because during the open rounds, compared to the ladder, we can see an increase of “tech” cards in the form of champions like Jarvan IV in dragon decks.

But what about the complete lineUps?

The line ups made of:

  • Aurelion Sol / Shyvana / Zoe
  • Draven / Ezreal
  • Nasus / Thresh

was the most popular choice.


Pairing

Which deck is usually paired with in a lineUp ? Since the option are too many I had to group most of the champions combination into a single value (Other). Here I grouped all values after the 10th most used deck.


Raw Pair

Pairing with full-Line-up data

deck Ashe / LeBlanc Aurelion Sol / Shyvana / Zoe Azir / Irelia Draven / Ezreal Draven / Jinx Lissandra / Trundle (FR/SI) Maokai / Nautilus Nasus / Thresh Renekton / Sejuani / Sivir Vi / Zoe Other
Ashe / LeBlanc 0 16 29 29 2 29 11 25 67 7 113
Aurelion Sol / Shyvana / Zoe 16 0 55 194 11 70 21 241 36 0 88
Azir / Irelia 29 55 0 180 57 153 80 325 131 23 309
Draven / Ezreal 29 194 180 0 0 120 17 457 70 68 293
Draven / Jinx 2 11 57 0 0 14 4 90 7 3 198
Lissandra / Trundle (FR/SI) 29 70 153 120 14 0 46 200 159 62 241
Maokai / Nautilus 11 21 80 17 4 46 0 45 55 8 103
Nasus / Thresh 25 241 325 457 90 200 45 0 71 65 383
Renekton / Sejuani / Sivir 67 36 131 70 7 159 55 71 0 25 147
Vi / Zoe 7 0 23 68 3 62 8 65 25 0 133
Other 113 88 309 293 198 241 103 383 147 133 1174
Total 328 732 1342 1428 386 1094 390 1902 768 394 3182

Distinct Pair

Pairing with distinct full-Line-up data

deck Ashe / LeBlanc Aurelion Sol / Shyvana / Zoe Azir / Irelia Draven / Ezreal Draven / Jinx Lissandra / Trundle (FR/SI) Maokai / Nautilus Nasus / Thresh Renekton / Sejuani / Sivir Vi / Zoe Other
Ashe / LeBlanc 0 7 13 12 2 8 7 10 15 4 70
Aurelion Sol / Shyvana / Zoe 7 0 11 14 4 11 8 21 12 0 74
Azir / Irelia 13 11 0 24 19 25 14 44 19 8 203
Draven / Ezreal 12 14 24 0 0 24 8 40 19 14 163
Draven / Jinx 2 4 19 0 0 6 3 24 4 3 71
Lissandra / Trundle (FR/SI) 8 11 25 24 6 0 13 25 29 11 150
Maokai / Nautilus 7 8 14 8 3 13 0 15 11 4 73
Nasus / Thresh 10 21 44 40 24 25 15 0 12 13 220
Renekton / Sejuani / Sivir 15 12 19 19 4 29 11 12 0 7 100
Vi / Zoe 4 0 8 14 3 11 4 13 7 0 76
Other 70 74 203 163 71 150 73 220 100 76 984
Total 148 162 380 318 136 302 156 424 228 140 2184

Top32 - Open Rounds

This is similar to the previous section but the question was: how conservative/original were the deck in the top32 compared to all participants? So the table will show how many “Other” (below the 5th most used deck) were included in a line-up. The results are from “at least 1 Other” deck to all 3 deck being from the Other category.

Reminding that the top5 most played decks are:

  • Azir / Irelia
  • Draven / Ezreal
  • Lissandra / Trundle (FR/SI)
  • Nasus / Thresh
  • Renekton / Sejuani / Sivir

Bans

We saw the line ups brought, but what was actually used? This is sadly not only tricky to compute but also impossible in some case where a player used only one of his/her deck.

What follows is a table containing the ban rates for each deck computeted in two different ways:

  • Mean Ban Rate by Line Up: mean value of the ban rate for each deck among all Line Ups that contains it.

Example: 100 LineUps, 99 with Azir/Irelia with 100% ban rate and 1 with 0% ban rate -> Mean Ban Rate by Line Up = (100x99+0x1)/100 = 99%

  • Ban Rate: ratio of number of ban of a deck among all bans acrooss line ups that contains such deck.

Example: 100 LineUps, 99 with Azir/Irelia with 1 games and Azir / Irelia banned in each istance (100% ban rate) and 1 line up with 0 ban but 100 games (0% ban rate) -> Ban Rate = (1x99+0)/199 = ~49.7%


Deck Structure from Bracket Stage

From the bracket stage of the Seasonal it was possible to see what looked like some exotic decks that appearead out of nowhere. In truth there was no dark-tecnology but in some cases players just used decks that were present in the data all along. So here I’ll add the deck structure of the least played decks from the ladder that appeared in the last weekend of the Seasonal (2021-06-26/27).

Some cases like Nox-Burn are excluded.

Draven / Riven / Vi (what I call “Draven pile”) is actually my favorite of the bunch. It’s a deck I knew about from about 3 weeks but couldn’t make it popular as it looked like a pile of cards at random and yet I have more success than with Garen/Sivir which is another ignored deck (but less on the Italian community, thanks Nukeduck)

Sejuani / Tryndamere (FR/SI)

Diana / Draven

Aphelios / Karma / Zoe

Garen / Sivir

Aurelion Sol / Vi / Zoe

Renekton / Sivir (FR/SH)

Draven / Riven / Vi