Event: Division 3

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Opponent	Rating	Result
Saul Marks	1444	0 - 1
Dan Hill	1508	½ - ½
Angus Weir	1440	0 - 1

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

1197 = (4392 + 400 * (0 - 2)) / 3)