Event: IM Brown Shield

Opponent Rating Result
Owen R Robson 1773 1 - 0
Samuel J Playford 1716 ½ - ½
Peter Rawcliffe 1703 1 - 0
Daniel Langhamer 1767 1 - 0
Andrew Birtwhistle 1756 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1903 = (8715 + 400 * (3 - 1)) / 5)

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