Event: Siminson Cup 23

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Opponent	Rating	Result
Paul Worledge	1925	0 - 1
Frank Usher	1550	1 - 0
Bob Wallace	1408	0 - 1
Graham Wilson	1168	1 - 0
Bob Wallace	1387	1 - 0

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

1568 = (7438 + 400 * (3 - 2)) / 5)