Event: NSDCA Division 3

Opponent Rating Result
Jakub Grabowski 1400 1 - 0
James Marshall 1511 0 - 1
Steve R Hill 1822 ½ - ½
David A Fuller 1477 ½ - ½
James Marshall 1495 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1461 = (7705 + 400 * (1 - 2)) / 5)

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