Event: Division 2

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Opponent	Rating	Result
Ruben Wilberg	1604	1 - 0
Ric Woodcock	1400	1 - 0
Luke Howard	1427	0 - 1

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

1610 = (4431 + 400 * (2 - 1)) / 3)