Event: Div 2 - Weston Trophy

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Opponent	Rating	Result
Alan S McIntosh	1810	0 - 1
Andrew Allen	1826	1 - 0
Vasileios Pasialis	1976	0 - 1
Richard E Desmedt	1789	0 - 1
Chris G Willey	1789	½ - ½
Nigel Baxendale	1648	1 - 0
Craig Chatterton	1697	0 - 1
Mark Watson	1460	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1699 = (13995 + 400 * (3 - 4)) / 8)