Event: Division 5

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Opponent Rating Result
Michael J Lord 1600 0 - 1
Michael P Foss 1537 1 - 0
David Brown 407 1 - 0
David Charters 1600 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1286 = (5144 + 400 * (2 - 2)) / 4)

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