Event: Division 2

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Opponent	Rating	Result
Paul H Kenning	1852	½ - ½
James D Steele	1855	1 - 0
James D Steele	1861	½ - ½

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

1989 = (5568 + 400 * (1 - 0)) / 3)