Event: Worcestershire Rapidplay league

Opponent Rating Result
Nigel S Towers 1845 ½ - ½
Rob Sutton 1659 0 - 1
T Giles Stanton 1519 1 - 0
Rob Sutton 1659 ½ - ½
Tomasz Grala 0 0 - 1
Nigel S Towers 1845 0 - 1
Rob Sutton 1659 0 - 1
T Giles Stanton 1519 1 - 0
Rob Sutton 1659 ½ - ½
Tomasz Grala 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1216 = (13364 + 400 * (2 - 5)) / 10)

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