Event: Division 2

Opponent Rating Result
Laurence A Cornhill 1846 ½ - ½
Daniel Langhamer 1795 ½ - ½
Simon Dixon 1749 ½ - ½
Barry Marshall 1708 ½ - ½
Norman G Andrews 1500 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1800 = (8598 + 400 * (1 - 0)) / 5)

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