Event: Division 4

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Opponent Rating Result
Mick J Frings 82 1 - 0
Michael J Harper 121 1 - 0
Arjuna Mendis 80 1 - 0
Andrew Watson 115 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

500 = (398 + 400 * (4 - 0)) / 4)

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