Event: Division 1

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Opponent	Rating	Result
Richard Kelly	1770	½ - ½
Rick Purcell	1862	0 - 1
Tomasz I Rudny	1920	½ - ½

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

1717 = (5552 + 400 * (0 - 1)) / 3)