Event: Ladder

Opponent Rating Result
Alex Piercy 1444 1 - 0
Joe Chan 1508 1 - 0
Martin Thompson 1410 1 - 0
Alan Green 1796 0 - 1
Martin Thompson 1395 1 - 0
Thomas Beckwith 1648 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1800 = (9201 + 400 * (5 - 1)) / 6)

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