Currently, I am working on two flavors for the divisional ranking pages:
Standard Elo
- Starter rating is 1000.
- K-Factor is 170.
- Uses the standard “algorithm of 400” Elo equation.
- Draws have a match impact of 0.5 for each fighter. Wins have a match impact of 1.0 for the winner, 0.0 for the loser.
The standard Elo will remain as is — unless I find a better Starter Rating / K-Factor combination for the sport as a whole or need to fix a bug.
Modified Elo
- Starter rating is 1000.
- K-Factor is 170.
- Uses the standard “algorithm of 400” Elo equation.
- Draws have a match impact of 0.5 for each fighter. Split decisions have a 0.67 for the winner, 0.33 for the loser. Majority decisions have a 0.833 for the winner, 0.167 for the loser. Other wins have a match impact of 1.0 for the winner, 0.0 for the loser.
- Disqualifications are ignored.
The modified Elo will be subject to any and all changes. The reason for the split and majority scoring is by judge (2/3 and 2.5/3 judge shares respectively). I’m going to start out by incorporating some common beliefs that I have after watching the sport itself and looking at raw data for over a decade (yes — it has been that long). I am going to ignore DQs to start, because it is an unnatural end to fights and there is not enough info to determine why the DQ happened.
Standard Elo – Top 10 – Active Men / Women
2446 Georges St. Pierre
2402 Daniel Cormier
2367 Jon Jones
2342 Tyron Woodley
2329 Robert Whittaker
2319 Max Holloway
2256 Tony Ferguson
2254 Khabib Nurmagomedov
2239 Ryan Bader
2236 Gegard Mousasi
1906 Amanda Nunes
1879 Cristiane Justino
1833 Rose Namajunas
1772 Jessica Andrade
1705 Claudia Gadelha
1688 Alexis Davis
1681 Joanna Jedrzejczyk
1674 Karolina Kowalkiewicz
1663 Valentina Shevchenko
1659 Tatiana Suarez
Modified Elo – Top 10 – Active Men / Women
2363 Daniel Cormier
2353 Georges St. Pierre
2353 Jon Jones
2300 Max Holloway
2263 Tyron Woodley
2251 Robert Whittaker
2226 Gegard Mousasi
2226 Khabib Nurmagomedov
2213 Tony Ferguson
2190 Demetrious Johnson
1867 Cristiane Justino
1836 Amanda Nunes
1830 Rose Namajunas
1746 Jessica Andrade
1674 Valentina Shevchenko
1653 Joanna Jedrzejczyk
1646 Livia Renata Souza
1630 Claudia Gadelha
1625 Tatiana Suarez
1624 Weili Zhang