Sport/Life Power Rankings - Chilean Primera Division, Round 1

I am creating a "power ranking". I want to be able to use it for different sports in different countries, but I'm starting with the Chilean football.

In here, I will write about the process. I've been thinking a while about the IFFHS or whatever they are rankings and you don't get to see too much into how they are actually done.

I have decided to begin with the Primera A and B - using the 2012 Annual table for each as a basis - this means Huachipato were not rewarded for winning the comp in 2012, moreso their average form. Puerto Montt were replaced with Copiapó - the relegation battles were also not taken into account.

The basic concept of the power ranking is your last game could lead to huge jumps in the ranking - if you beat someone well above, you take their place. The overall ranking is calculated by your total points (less points the better - first is one point, worst in the B is 32 points).

Round 1 (from Soccerway)

Primera Division

Fri	25/01/13	Rangers	1 - 1	Audax Italiano	View events	More info
		Huachipato	0 - 0	San Marcos	View events	More info
Sat	26/01/13	Unión La Calera	2 - 1	Antofagasta	View events	More info
		Ñublense	1 - 1	Everton	View events	More info
		Deportes Iquique	0 - 0	Palestino	View events	More info
Sun	27/01/13	Cobreloa	5 - 2	Colo Colo	View events	More info
		Cobresal	1 - 2	Unión Española	View events	More info
		O'Higgins	0 - 1	Universidad Ca…	View events	More info
Wed	27/02/13	Santiago Wanderers	2 - 1	Universidad Chile	View events	More info
* Matches were or will be played in the past/next 3 days. Primera B Sat 09/02/13 Unión Temuco 0 - 2 Univ. Concepción View events More info Coquimbo Unido 3 - 1 Unión San Felipe View events More info Sun 10/02/13 San Luis 0 - 1 Copiapó View events More info Magallanes 3 - 2 La Serena View events More info Lota Schwager 0 - 1 Naval View events More info Mon 11/02/13 Barnechea 1 - 2 Curicó Unido View events More info * Matches were or will be played in the past/next 3 days. Some notes to begin. The U de Chile vs Wanderers match was rescheduled - La U's loss sees them have a huge drop in the power rankings. None of the top 4 teams from the table had victory. Wanderers had a big boost in the rankings. Católica were boosted an extra place due to losses above, while Colo Colo dropped one place. Everton and Ñublense had a draw. My current plan is to cut the difference between the two sides, then the away team goes higher. These chaotic results have some troubles with that, particular the large amount of draws. The key complications were the draw between San Marcos de Arica and Huachipato as well as the losses for Colo Colo and Universidad de Chile.  The large change with Arica saw a big shift in the number with some benefits for teams in the middle of the table. The Primera B teams were straightforward, with easier results to calculate. Teams beating the relegated teams were the biggest winners. Round 1 Power Rankings Santiago Wanderers Cobreloa Universidad Católica Palestino Iquique Unión Española O'Higgins Unión La Calera Audax Italiano Rangers Universidad de Chile Colo-Colo San Marcos de Arica  Huachipato Antofagasta Universidad de Concepción Cobresal Coquimbo Unido Magallanes Curicó Unido Ñublense  Everton  Deportes Concepción Deportes Copiapó Naval Unión San Felipe Unión Temuco Santiago Morning La Serena Barnechea FC Lota Schwager San Luis I am not sure if I should include the original ranking (ie the place at end of 2012) in the calculations. I guess I can calculate both and figure it out. I am trying to figure out a way to automate all this for taking it to other sports, but haven't got to that yet. This is the first round so I will see how it goes over the next rounds.