Event: BSE Jnr Congress u18

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Opponent	Rating	Result
Nikolay Starodubcevs-Snaiders	1400	1 - 0
Rowan Kent	1618	0 - 1
Oliver Ferris	1341	0 - 1
Toby De Groot	1000	1 - 0
Oliver Morales	1579	0 - 1
Mackenzie Harvey-Gibson	0	0 - 1

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

1023 = (6938 + 400 * (2 - 4)) / 6)