Event: Division 3

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Opponent Rating Result
Richard Batey 2063 0 - 1
Rhys Perry 1506 0 - 1
Ainsley Killey 1582 0 - 1
Dave Tomlin 1372 1 - 0
Rhys Perry 1522 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1449 = (8045 + 400 * (1 - 3)) / 5)

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