Event: BCL Division 1

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Opponent	Rating	Result
Gary Kenworthy	2092	0 - 1
Peter Taylor	1810	1 - 0
Andrew Bowler	1887	½ - ½

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

1930 = (5789 + 400 * (1 - 1)) / 3)