Event: Division 4

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Opponent Rating Result
Joe Whalley 1425 0 - 1
Ronald Watson 1441 0 - 1
Leo Orehhov 1179 ½ - ½
Theo Foster 1215 1 - 0
Robin Sykes 1095 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1271 = (6355 + 400 * (2 - 2)) / 5)

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