Event: League Division 3

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Opponent	Rating	Result
RA (Bob) Maltby	1640	1 - 0
Eric J Brodie	1809	1 - 0
Chris Hare	1340	½ - ½

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

1863 = (4789 + 400 * (2 - 0)) / 3)