Event: Division 1

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Opponent	Rating	Result
Kenneth Hoadley	1993	0 - 1
Martin C Worrall	1756	½ - ½
Paul Smith	1692	½ - ½

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

1680 = (5441 + 400 * (0 - 1)) / 3)