Event: Division 3

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Opponent	Rating	Result
Geoff Briggs	1356	½ - ½
Adam Varga	886	1 - 0
Steve Gledhill	1395	0 - 1

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

1212 = (3637 + 400 * (1 - 1)) / 3)