Event: Watkinsons League

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Opponent Rating Result
David Robinson 1791 1 - 0
Hamidreza Faham 1648 1 - 0
Steve Westmoreland 148 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1329 = (3587 + 400 * (2 - 1)) / 3)

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