Event: Division Four

Opponent Rating Result
Ray Hall 1672 ½ - ½
Derek A Stockhall 1578 1 - 0
Lee E Collier 1782 ½ - ½
Paul Silverman 1563 ½ - ½
Satnam S Goray 0 ½ - ½
Peter W Lawrence 1705 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1517 = (8300 + 400 * (2 - 0)) / 6)

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