Event: Division 7

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Opponent	Rating	Result
Janaka Jayasinghe	1537	1 - 0
Alistair Jennis	1351	0 - 1
Hywel Burke	1127	1 - 0
Matthew Bagley	1435	0 - 1
Jack Jewell	370	1 - 0
Aditya Vikram Sengupta	1307	½ - ½
Matthew Bagley	1435	1 - 0
Alistair Jennis	1351	½ - ½

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

1339 = (9913 + 400 * (4 - 2)) / 8)