How to fix the Team Elo guide for Devs

There is a well known exploit in the current team elo system, that allows players boost themselfes to rank one if they have friends playing on smurfs.

By calculating individual elo of players vs the average Elo of the enemy team this exploits would be gone and the old inflation wouldn't return.

Everything here is with a K value(Max change) of 32. Like it is currently used in DE.

Lets look at some examples:

Original system that was used untill some weeks ago(Problem inflation):

Imageine a 2v2 with :

P1 1000 elo

P2 2000 elo

P3 1500 elo

P4 1500 elo

P1 and P2 vs P3 and P4

If team 1/2 wins P1 gains 30.3 elo P2 gains 1.7 elo P3 looses 1.7 elo P4 looses 1.7 elo. Total elo produced: 28.6

If Team 3/4 winf P1 looses 1.7 elo P2 looses 30.3 elo P3 gains 30.3 elo P4 gains 30.3 elo. Total elo produced: 28.6.

Current system, only compear average elo and distribute points evenly between players:

Imageine a 2v2 with :

P1 1000 elo

P2 2000 elo

P3 1500 elo

P4 1500 elo

P1 and P2 vs P3 and P4

If team 1/2 wins P1 and P2 gain 16 elo while P3 and P4 loose 16 elo each. No elo is genarated same goes if the other team wins. BUT P2 and P1 might both be 1500 that are trying to boost P1 up. This is what the current rank 1 on the ladder does. Four 1400 1v1 players can reasonably boost an account to 7000 team elo in 400 games.

New way of calculating proposed here:

Calculate elo change by evaluating elo change of individual players vs the average elo of the enemy team.

Imageine a 2v2 with :

P1 1000 elo

P2 2000 elo

P3 1500 elo

P4 1500 elo

P1 and P2 vs P3 and P4

If team 1/2 wins P1 gains 30.3 elo P2 gains 1.7 elo P3 looses 16 elo P4 looses 16 elo. Total elo produced: 0.

If Team 3/4 wins P1 looses 1.7 elo P2 looses 30.3 elo P3 gains 16 elo P4 gains 16 elo. Total elo produced: 0.

Since high elo players get dimishing returns from playing with smurfs it is impossible to boost singular accounts up to high elo like this. While it also doesn't inflate the elo system.

I hope I was able to convince some dev that read this that calculculating individual elo vs average of enemy team is the correct way of action.

Thanks for reading. (This was witten on my phone during lunchbreak so srry for any typos)

submitted by /u/Michael_RS
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