Event: MCA Division 2

Opponent Rating Result
Joe W Butterworth 1615 1 - 0
GS Cannon 0 1 - 0
Geoffrey W Sage 1930 1 - 0
Peter Jenner 1578 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1581 = (5123 + 400 * (3 - 0)) / 4)

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