Event: Derby & District Division 2

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Opponent Rating Result
Anushka M. Ramawickrama 1716 0 - 1
Nigel D Marshall 1429 1 - 0
John E Fryer 1492 1 - 0
Talakalukoppa Amarnath 1588 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1656 = (6225 + 400 * (2 - 1)) / 4)

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