Event: Division 2

Opponent Rating Result
Foivos Patrik Tzortzakos 1855 ½ - ½
Alfie Henshaw 1453 ½ - ½
Richard Betts 1819 ½ - ½
Ken D Jones 1675 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1601 = (6802 + 400 * (0 - 1)) / 4)

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