Event: LCA Division 1

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Opponent	Rating	Result
Stuart MacDonald	1850	1 - 0
John Housego	1461	1 - 0
John P Mainwaring	136	0 - 1

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

1282 = (3447 + 400 * (2 - 1)) / 3)