Event: Rapidplay Ladder

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Opponent	Rating	Result
Mehmet Isci	1418	0 - 1
Tristan Green	1405	1 - 0
James Mann	1236	0 - 1

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

1220 = (4059 + 400 * (1 - 2)) / 3)