Event: LCA Division 2

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Opponent	Rating	Result
Joanne Hutchinson	1748	½ - ½
Jules Brown	1752	0 - 1
Jason Golding	1272	1 - 0
Glyn G Williams	1465	0 - 1
Dave Bull	1680	0 - 1
John Pocock	1441	1 - 0
John Pocock	1441	1 - 0

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

1543 = (10799 + 400 * (3 - 3)) / 7)