Event: Division 1

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Opponent	Rating	Result
Peter J Mercs	1994	½ - ½
John T Swain	2031	½ - ½
David H Coates	2048	1 - 0

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

2158 = (6073 + 400 * (1 - 0)) / 3)