Event: Division B

Opponent Rating Result
Alex Porter 1503 ½ - ½
Mark Haydock 1450 1 - 0
Brian Davies 1254 1 - 0
Brian Davies 1254 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1465 = (5461 + 400 * (2 - 1)) / 4)

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