Event: OTB Rapid Championship

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Opponent	Rating	Result
David Smith	1523	1 - 0
Michael GA Wilson	1629	0 - 1
Paul R Barclay	1751	1 - 0

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

1768 = (4903 + 400 * (2 - 1)) / 3)