Event: Division 3

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Opponent	Rating	Result
Ben Cullen	1948	0 - 1
Liam Fleming	1899	1 - 0
Rory R McLean	1726	0 - 1

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

1724 = (5573 + 400 * (1 - 2)) / 3)