Event: Division 2

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Opponent	Rating	Result
Tom A Barton	1935	0 - 1
Jeremy Law	1970	0 - 1
Jagdip TK Patel	1929	1 - 0

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

1811 = (5834 + 400 * (1 - 2)) / 3)