Event: Rapid League I

Opponent Rating Result
Marek Zajaczkowski 1523 ½ - ½
Dennis Browning 1908 0 - 1
Ian Lavallin 1330 0 - 1
Steve Fairhurst 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1090 = (4761 + 400 * (1 - 2)) / 4)

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