Event: MCA Division 1

Opponent Rating Result
Phil Davies 1945 0 - 1
Colin D Horton 2020 0 - 1
Roger G Williamson 2253 0 - 1
Mike Stoddart 1675 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1773 = (7893 + 400 * (1 - 3)) / 4)

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