Event: Division 3

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Opponent	Rating	Result
Mike B Smith	1455	1 - 0
Tony B Packham	1822	½ - ½
Steve Sonnis	1580	1 - 0

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

1886 = (4857 + 400 * (2 - 0)) / 3)