Event: Division 1

Opponent Rating Result
Simon Wilks 1989 0 - 1
Panagiotis Kanellopoulos 2286 0 - 1
Mark R Le-Vine 2050 1 - 0
Jan Balogh 1968 1 - 0
Stephen J Gregory 2100 0 - 1
Panagiotis Kanellopoulos 2277 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1978 = (12670 + 400 * (2 - 4)) / 6)

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