Event: Division 2

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Opponent	Rating	Result
Bill Kimberley	1624	½ - ½
Philip Sykes	1574	0 - 1
Sam Duffield	1255	0 - 1

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

1218 = (4453 + 400 * (0 - 2)) / 3)