Event: Division 3

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Opponent	Rating	Result
Tom Woodhall	1359	1 - 0
David I Buckley	1181	1 - 0
Joe Walker	1190	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1643 = (3730 + 400 * (3 - 0)) / 3)