Event: Division 4

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Opponent	Rating	Result
James Meadows	1438	1 - 0
Jack Lintern	1566	0 - 1
Chris Hillier	1968	1 - 0

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

1791 = (4972 + 400 * (2 - 1)) / 3)