Event: Division 4

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Opponent Rating Result
Neil Sumagaysay 1705 0 - 1
Oliver Penney 1675 0 - 1
Michael A jnr Garland 1623 1 - 0
Ian Farquharson 1675 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1670 = (6678 + 400 * (2 - 2)) / 4)

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