Event: League Division 2

Opponent Rating Result
Iain Starks 1162 1 - 0
Jeff Dutton 1572 0 - 1
David Morris 1724 ½ - ½
Tony Barnes 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1215 = (4458 + 400 * (2 - 1)) / 4)

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