Event: Arjay Plate

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Opponent	Rating	Result
Richard Finney	1522	1 - 0
Stephen Firth	1668	0 - 1
Jonathon Day	1543	0 - 1

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

1444 = (4733 + 400 * (1 - 2)) / 3)