Event: Club Championship Silver Section

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Opponent	Rating	Result
Joseph Grant	1649	0 - 1
Simon R Nichols	1682
Phil Sneesby	1534	½ - ½
Joe Ross	1767

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

1392 = (3183 + 400 * (0 - 1)) / 2)