Event: NCCA League Division 2

Opponent Rating Result
Robin Blackwell 1873 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2273 = (1873 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
Thomas Annison 1550 0 - 1
Barry Connor 1695 0 - 1
Michael J Gibbons 1837 0 - 1
David W Moore 1462 1 - 0
David M Owen 1757 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1500 = (8301 + 400 * (1 - 3)) / 5)