Event: Rainham Championship Div 2

Opponent Rating Result
Joshua Gillespie 1450 0 - 1
Edward Marker 1526 1 - 0
Alex M Skerten 1562 ½ - ½
Gary R Clifford 1516 1 - 0
Tyrone R Jefferies 1555 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1602 = (7609 + 400 * (2 - 1)) / 5)

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