Event: Division 2

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Opponent	Rating	Result
Roger R Pearson	1025	½ - ½
Sri Sriharan	1351	1 - 0
Toby Conyers-Kelly	1172	½ - ½
C Rodney S Mitchinson	1209	1 - 0
Paul Masiak	1361	1 - 0
Lucas Whitehead	1511	0 - 1
Hasti Pargan	0	1 - 0
Mick Beavers	1258	1 - 0

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

1311 = (8887 + 400 * (5 - 1)) / 8)