Event: Division 2

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Opponent	Rating	Result
Shriya Pillay	1503	1 - 0
Peter Turner	1308	1 - 0
James Perks	1300	1 - 0

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

1770 = (4111 + 400 * (3 - 0)) / 3)