Event: Division 3 West

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Opponent	Rating	Result
Ian Chacon	117	½ - ½
Robert D Harris	104	1 - 0
W John Parsons	105	1 - 0
W John Parsons	105	1 - 0
Barry Thornley	95	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

425 = (526 + 400 * (4 - 0)) / 5)