Event: Siminson Cup 23

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Opponent	Rating	Result
John L Clarke	1394	1 - 0
Don Richards	1398	1 - 0
Frank Usher	1550	½ - ½
Bob Wallace	1408	1 - 0
Frank Usher	1550	0 - 1

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

1620 = (7300 + 400 * (3 - 1)) / 5)