Event: Division 2

Opponent Rating Result
Michael WA Hoare 1658 0 - 1
Steven R Colwell 1503 ½ - ½
Steve Tyler 1721 0 - 1
Neill Harvey-Smith 1616 0 - 1
Brian Homewood 1653 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1470 = (8151 + 400 * (1 - 3)) / 5)

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