Event: Division 5

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Opponent	Rating	Result
Michael J Gunn	1560	1 - 0
Peter J Horlock	1622	½ - ½
Robert Wooding	1533	1 - 0

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

1838 = (4715 + 400 * (2 - 0)) / 3)