Event: Division 1

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Opponent	Rating	Result
Richard A Bates	2362	½ - ½
Ashley Stewart	2245	1 - 0
Robert S Eames	2223	½ - ½

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

2410 = (6830 + 400 * (1 - 0)) / 3)