Event: Division 6

Opponent Rating Result
Paul S Collis 1511 ½ - ½
Ian Searle 1525 ½ - ½
Michael J Lord 1521 1 - 0
Scott Westaway 1258 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1654 = (5815 + 400 * (2 - 0)) / 4)

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