Event: Division 4

Opponent Rating Result
Jonathan Rooney 1577 ½ - ½
Barry Edgar 1602 ½ - ½
Dennis A White 1554 1 - 0
Thomas Cameron 1544 0 - 1
John S Marsh 1702 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1516 = (7979 + 400 * (1 - 2)) / 5)

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