Event: Division 2

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Opponent	Rating	Result
Steve Whatmore	1820	0 - 1
Stephen Gaskell	1481	0 - 1
Steven P Heath	1533	0 - 1

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

1211 = (4834 + 400 * (0 - 3)) / 3)