Event: Division 4

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Opponent	Rating	Result
Conor Newton	1590	0 - 1
William Cook	1495	0 - 1
Miklos Farkas	1543	1 - 0

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

1409 = (4628 + 400 * (1 - 2)) / 3)