Event: Division 4 - Under 6000

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Opponent	Rating	Result
Rhys Hammond	1082	1 - 0
James Trenam-Nash	1300	1 - 0
Simon Howard	1349	1 - 0

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

1644 = (3731 + 400 * (3 - 0)) / 3)