Event: Walker Shield

Opponent Rating Result
David Erwee 1533 ½ - ½
Jon Hunt 1249 0 - 1
Graeme Boxall 1435 ½ - ½
David Erwee 1533 0 - 1
Malcolm Snashall 1474 0 - 1
Lawrence Hawkswell 1466 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1182 = (8690 + 400 * (0 - 4)) / 6)

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