Event: Division 5

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Opponent	Rating	Result
J Robert Appleby	1430	0 - 1
Andrew Hardy	1497	1 - 0
Albert Griffiths	1447	0 - 1

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

1325 = (4374 + 400 * (1 - 2)) / 3)