Event: Division 2

Opponent Rating Result
Bernard A Rogers 1735 0 - 1
Fred S Dickson 1610 0 - 1
Freddie Beer 0 1 - 0
Paul L Hardstaff 1467 0 - 1
Alan Eley 1505 1 - 0
Nigel Foster 1599 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1253 = (7916 + 400 * (2 - 3)) / 6)

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