Event: Division 3

Opponent Rating Result
Michael David (Mick) M Adams 1263 0 - 1
Michael A jnr Garland 1623 0 - 1
Michael David (Mick) M Adams 1263 0 - 1
Matthew J Connor 1630 0 - 1
Jim B Kellock 1045 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1125 = (6824 + 400 * (1 - 4)) / 5)

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