Event: Bak

Opponent Rating Result
Loganigilesh Karthik 1469 0 - 1
Lee Boyes 1619 0 - 1
Rik Panesar 1218 1 - 0
Ralph Barraclough 1571 1 - 0
Derrick J Mason 1439 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1383 = (7316 + 400 * (2 - 3)) / 5)

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