Event: Rated Friendlies - 23/24

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Opponent	Rating	Result
Theo Horne	1567	0 - 1
Theo Horne	1594	1 - 0
Jiaxing Liang	1275	0 - 1

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

1345 = (4436 + 400 * (1 - 2)) / 3)