Event: Division 2

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Opponent	Rating	Result
Owen R Robson	1748	0 - 1
Derek Toyne	1595	½ - ½
Owen R Robson	1769	½ - ½
Tony Howard	1668	1 - 0
Maksym Kryshtafor	1873	0 - 1
Ben Barton	1713	1 - 0
Adrian Lee	1702	1 - 0

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

1781 = (12068 + 400 * (3 - 2)) / 7)