Event: Division Four

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Opponent Rating Result
Anthony (Tony) Rake 1444 0 - 1
Ian M Truscott 1569 ½ - ½
Derek A Stockhall 1568 0 - 1
Tony Newbanks 1220 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1150 = (5801 + 400 * (0 - 3)) / 4)

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