Event: Division One

Opponent Rating Result
Roger Betts 1877 ½ - ½
Tim L Rogers 2067 1 - 0
Nigel D Smith 1875 ½ - ½
Maurice E Lawson 2025 ½ - ½
Kenneth G Coates 1980 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1965 = (9824 + 400 * (1 - 1)) / 5)

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