Event: BSE Jnr Congress u13

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Opponent	Rating	Result
Ethan Liu	1231	0 - 1
Abiru Arachchige	1285	0 - 1
James Thurlow	410	0 - 1
Travis Gooch	492	0 - 1
Annindya Ghare	1014	0 - 1

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

486 = (4432 + 400 * (0 - 5)) / 5)