Event: Crewe Longplay - Division 2

Opponent Rating Result
Michael Keenan 70 1 - 0
Reinhard Haack 90 1 - 0
Les Hall 80 1 - 0
Josh Cross 40 1 - 0
Lukasz Michalek 88 0 - 1
Ben Harrison 65 1 - 0
Philip Wright 71 ½ - ½
George P Jelliss 73 ½ - ½
Kobus Nienaber 84 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

207 = (661 + 400 * (5 - 2)) / 9)

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