Event: NCCA League Division 4

Opponent Rating Result
Martin Griffin 1543 1 - 0
Charlie Giggle 1521 1 - 0
Tony Piper 1353 ½ - ½
David L Jones 1513 1 - 0
James Woodburn 1375 1 - 0
Jonah Walklate 950 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1709 = (8255 + 400 * (5 - 0)) / 6)

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