Event: Division 4

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Opponent	Rating	Result
Shaun Walsh	1340	1 - 0
Richard Barnes	1453	½ - ½
Jayden Gamlin	1397	1 - 0

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

1663 = (4190 + 400 * (2 - 0)) / 3)