Event: League Division 1

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Opponent	Rating	Result
Mark D Crowther	2113	½ - ½
Oliver Gill	2224	0 - 1
Mate Ther	2144	½ - ½
Daniel J Staples	2049	0 - 1
Mark D Crowther	2113	0 - 1
Liza Kisteneva	2305	1 - 0
Hongyi Yu	0	1 - 0
Daniel J Staples	2049	½ - ½

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

1825 = (14997 + 400 * (2 - 3)) / 8)