Event: Division 4

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Opponent	Rating	Result
David J Barker	1463	0 - 1
Bradley Vanian	1424	1 - 0
Alaric Johnson	1401	1 - 0

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

1563 = (4288 + 400 * (2 - 1)) / 3)