Event: Summer Rapidplay

Opponent Rating Result
Sam Stevenson 1183 1 - 0
Richard Kuby 1410 1 - 0
Alex Jamieson 1476 1 - 0
Phil Wales 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1217 = (4069 + 400 * (3 - 1)) / 4)

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