Event: EDCA - National Premier

Opponent Rating Result
Ilan Dwek 1722 0 - 1
Gary Hunter 1656 ½ - ½
Peter T Sharpe 1712 1 - 0
Barry A H David 1708 0 - 1
Alasdair MacLeod 1789 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1557 = (8587 + 400 * (1 - 3)) / 5)

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