Event: Beverley Club Championship

Opponent Rating Result
Derek A Sheppard 135 0 - 1
Esmond Harding 130 1 - 0
Stephen Philp 128 0 - 1
David J Gibson 114 1 - 0
Peter T Perkins 120 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

45 = (627 + 400 * (2 - 3)) / 5)

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