Event: Easter Rapidplay

Opponent Rating Result
Zhuoyi Lin 991 0 - 1
George Butterworth 1096 1 - 0
Richard Stevenson 1177 ½ - ½
Thomas Pyman 0 1 - 0
Stephen Rodgers 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

653 = (3264 + 400 * (2 - 2)) / 5)

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