Event: Thornaby Rapidplay Ladder

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Opponent	Rating	Result
Andrew Austen	1617	1 - 0
Laura Holdforth	1307	1 - 0
David Pizzi	1369	1 - 0

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

1831 = (4293 + 400 * (3 - 0)) / 3)