Event: Division 2

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Opponent	Rating	Result
Gordon L Glover	1507	0 - 1
Matthew Grimley	1644	1 - 0
Roy Bywater	1287	1 - 0

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

1613 = (4438 + 400 * (2 - 1)) / 3)