Event: South Cheshire Shield

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Opponent	Rating	Result
Gerald Parton	1200	1 - 0
Philip Grocott	1360	0 - 1
Robert Perry	1102	1 - 0
Momin Khan	1200	1 - 0
Lee Spackman	1100	0 - 1

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

1272 = (5962 + 400 * (3 - 2)) / 5)