Event: WDCL Division 2

Opponent Rating Result
Peter Hamill-Stewart 1540 0 - 1
Gareth Dykes 1450 ½ - ½
Graham Arthur 1285 0 - 1
Colin Mather 1473 ½ - ½
Sean Murphy 1390 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1348 = (7138 + 400 * (1 - 2)) / 5)

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