Event: Division One

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Opponent	Rating	Result
Keith C Arkell	242	0 - 1
Alfie Onslow	208	1 - 0
Nishchal Thatte	168	1 - 0
David C Okike	201	0 - 1
Robert S Eames	206	0 - 1
Charlie B Nettleton	190	1 - 0
Bogdan Lalic	230	0 - 1
Bogdan Lalic	230	½ - ½

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

159 = (1675 + 400 * (3 - 4)) / 8)