Event: Rainham Championship Div 2

Opponent Rating Result
Joshua Gillespie 0 0 - 1
Alex M Skerten 1450 1 - 0
Edward Marker 1261 0 - 1
Tyrone R Jefferies 1604 0 - 1
Terry Ogden 1479 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

919 = (5794 + 400 * (1 - 4)) / 5)

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