Event: Division 1

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Opponent Rating Result
Stephen Ward 174 0 - 1
Howard R Hughes 195 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-16 = (369 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
David A Talbot 148 ½ - ½
Robert Morris 127 0 - 1
Rob Tokeley 157 1 - 0
Steve J Horrocks 166 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

250 = (598 + 400 * (2 - 1)) / 4)