elo rating system football .
The World Football Elo Ratings are based on the Elo rating system, developed by Dr. Arpad Elo. This system is used by FIDE, the international chess federation, to rate chess players.
Eloratings.net applies the Elo rating system to international football, by adding a weighting for the kind of match, an adjustment for the home team advantage, and an adjustment for goal difference in the match result.
The ratings take into account all international “A” matches for which results could be found. International football data is primarily obtained from rsssf.com (pre-2019, which was when some of their contributors started copying unsourced data from wikipedia), theroonba.com, and soccer-db.info (discontinued).
Ratings tend to converge on a team’s true strength relative to its competitors after about 30 matches. Ratings for teams with fewer than 30 matches should be considered provisional.
The ratings are based on the following formulas:
Rn = Ro + K × (W - We)
Rn is the new rating, Ro is the old (pre-match) rating.
K is the weight constant for the tournament played:
60 for World Cup finals;
50 for continental championship finals and major intercontinental tournaments;
40 for World Cup and continental qualifiers and major tournaments;
30 for all other tournaments;
20 for friendly matches.
K is then adjusted for the goal difference in the game. It is increased by half if a game is won by two goals, by 3/4 if a game is won by three goals, and by 3/4 + (N-3)/8 if the game is won by four or more goals, where N is the goal difference.
W is the result of the game (1 for a win, 0.5 for a draw, and 0 for a loss).
We is the expected result (win expectancy), either from the chart or the following formula:
We = 1 / (10(-dr/400) + 1)
dr equals the difference in ratings plus 100 points for a team playing at home.
more World Football Elo Ratings
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andora = “player level” 1102 vs argentina = “player level” 2117
win andora = 60 points
win argentina = 0 points
australia = “player level” 1783 vs argentina = “player level” 2117
win australia = 52 points
win argentina = 8 points
france = “player level” 2110 vs argentina = “player level” 2117
win france = 31 points
win argentina = 29 points
- more goals=more points