Event: Division 3

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Opponent	Rating	Result
Rory Melough	1523	0 - 1
Ian Boddington	1314	1 - 0
Joe Hardy	1200	0 - 1

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

1212 = (4037 + 400 * (1 - 2)) / 3)