Event: Division 4B

Opponent Rating Result
Oba G Kofi 1353 1 - 0
Mike Roberts 1515 1 - 0
Michael Dean 1395 ½ - ½
Samuel Thomson 1468 1 - 0
Ed Swann 1369 ½ - ½
Mark Thwaites 1442 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1624 = (8542 + 400 * (3 - 0)) / 6)

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