Event: U1800 Cup

Opponent Rating Result
Chris Skirrow 1683 0 - 1
Adrian Sanderson 1540 0 - 1
Mark Heffer 1698 1 - 0
Mark Heffer 0 ½ - ½
Nick Margerum 1500 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1204 = (6421 + 400 * (1 - 2)) / 5)

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