Event: Hargreaves Shield

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Opponent Rating Result
Andrew M Haycock 101 1 - 0
Chris F Stampe 127 1 - 0
Robert G Page 135 0 - 1
Robert G Page 135 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

125 = (498 + 400 * (2 - 2)) / 4)

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