Event: John Davis 6200 League

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Opponent	Rating	Result
Steven Philp	1547	0 - 1
Edward Patten	1530	½ - ½
Joey Farnworth	1403	0 - 1

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

1227 = (4480 + 400 * (0 - 2)) / 3)