Event: Summer Rapid

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Opponent Rating Result
Wesley J Vickers 1973 0 - 1
Charlie G Swinson 1304 1 - 0
Roger W Walker 1825 0 - 1
Ewan F Corden 1225 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1382 = (6327 + 400 * (1 - 3)) / 4)

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