Event: Bottom Half A&B Division

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Opponent	Rating	Result
Stephen Cole	1909	0 - 1
Harry Tennant	1543	1 - 0
Kegan Harrison	1696	0 - 1

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

1583 = (5148 + 400 * (1 - 2)) / 3)