An ABLE System: toward league fairness....

[Digger Goreman]

Hi Digger -

The best of luck with your system. Looks complex to me, but if you are able to run it without strain, then good.

Thanks, it's nowhere as difficult as it may look... simple math....

What data are you using for the division of teams into tiers? 17 teams rated the same (tier 1) seems a rather large division. Aren't some of these teams "more equal than others"? And if 7 out of 24 teams perform with a win ratio below 50%, doesn't that mean the other 17 teams (tier 1) have an expected win ratio well above 50% (approximately 54.56% according to my quick calculation, assuming an equal number of each race)?

Here in NZ we observe Underworld and Slann performing at "tier 1" level (I accept this is a small sample). Chaos Pact not far behind.

This is just a roundabout way of saying that I would be inclined to prefer a finer grain of tiering (say 5 tiers).

viewtopic.php?f=20&t=27091&hilit=tiers

What the BBRC officially used to balance the tiers was this:

Tier 1: Any team not in another Tier
Tier 1.5: Chaos Pact, Slann and Underworld
Tier 2: Vampire
Tier 3: Halfling, Goblin, Ogre

For the BBRC meeting last October to finalize the CRP we defined the Tiers like this though:

Tier 1: 55% to 45% win rate in average league play (with ties counting as 1/2 wins)
Tier 1.5: 50% to 40%
Tier 2: 45% to 35%
Tier 3: 35% to 30%

Galak

I'd also like, if possible, more empirical and specific data on team winning percentages... however, in absence of such, I went with averages based on the above....

I would also be wary of applying restrictions on who can play against whom, on the basis that we run an open league which seems to be successful on the basis of its openness (anybody can play anybody anytime). But if your coaches are happy with it, then good. But take care that the system does not intimidate newcomers.

All the best.

Only the challenge system restricts anyone... and it's worked well in the past.... I'm definitely keeping the good lessons learned! Really, the only thing a coach has to do is record a few numbers... I take care of the rest....

You really live in NZ?! Some people have all the luck....

[Smeborg]

You really live in NZ?! Some people have all the luck....

Yeah, I count myself very lucky indeed in this regard. I was brought up in England, lived in 7 or 8 other countries, and finally migrated to NZ 7 years ago.

The only thing missing was BB, so last year when my life became more settled, I finally got around to starting a league here in Christchurch (population a bit below 400,000). It's going well, we have about 18 active coaches, with just over 50 active teams between them (at least one of each race, which is really nice). 4 coaches are teenagers, which is good for the future.

All the best.

[Digger Goreman]

We're gonna get it started next weekend....

Crossing fingers....