Event: Summer League Division 4

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Opponent Rating Result
Thomas Hancock 1574 0 - 1
Ben J Fletcher 1271 ½ - ½
Ed Wignick 0 1 - 0
Alex Thorp 1371 1 - 0
John M Oughton 1255 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1254 = (5471 + 400 * (3 - 1)) / 5)

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