Event: Division 1

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Opponent	Rating	Result
John Whitfield	1791	0 - 1
B Searson	1577	0 - 1
Jonathan Howarth	1565	0 - 1

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

1244 = (4933 + 400 * (0 - 3)) / 3)