Event: MCA Division 4

Opponent Rating Result
Leo Chamberlain 0 1 - 0
David McKee 1497 0 - 1
Jane Reece 0 0 - 1
Harry Pollock 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

374 = (1497 + 400 * (2 - 2)) / 4)

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