Event: BSE Jnr Congress u13

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Opponent	Rating	Result
Wiktor Orchowski	700	1 - 0
Freddie Jacobs	800	1 - 0
Vassily M Sagyaman	1521	½ - ½
Callum Garrett	967	1 - 0
Leon Edwards	1553	1 - 0
Vicktor Starodubcevs-Snaiders	1100	½ - ½

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

1374 = (6641 + 400 * (4 - 0)) / 6)