System Name:
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Round-robin Winning Percentage
(RWP)
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Type:
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Retrodictive (Adv/Scr/Ret)
“Explains the Past”
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Considers:
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Math: | Odds Pairwise Comparision (Logistic MLE) | ||||||||||||||||||||
Description:
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Ranks teams in the order of their potential Round-robin Winning Percentage.
Since most sports leagues have schedules that are unbalanced, involve
some inter-league play, or just not enough matches; this system
extrapolates season-to-date team results to determine projected
finishing percentages in a fully completed head-to-head schedule. Prior
to 2010, a full point was awarded to the winning team. However this
approach had drawbacks because undefeated and winless teams may
initially have strange ratings and satisfactory results cannot be
obtained until about ¼ of the way into the season. An equitable solution is to split the game point based on each team’s relative performance for each game.
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Ranking and Rating Systems coded by Pat Laffaye.
Special thanks to:
Kenneth Massey for hosting the Ranking Comparison website…
Peter Wolfe for providing game score data…
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