Event: Division 3

Opponent Rating Result
David J Barker 1463 1 - 0
Stefan Winman 1422 1 - 0
Mick J Lloyd 1427 0 - 1
David Holroyd 1328 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1610 = (5640 + 400 * (3 - 1)) / 4)

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