Event: NSDCA Division 3

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Opponent	Rating	Result
Isaac Stanley	1612	1 - 0
Jamie Roberts	1521	½ - ½
Charlie G Swinson	1448	½ - ½

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

1660 = (4581 + 400 * (1 - 0)) / 3)