Event: Division 4

Opponent Rating Result
Dave Mellon 1528 1 - 0
Timothy J Chapman 1702 ½ - ½
Mark J Fulleylove 1708 ½ - ½
Edward Hargreaves 1576 1 - 0
David Carpenter 1690 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1721 = (8204 + 400 * (2 - 1)) / 5)

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