Event: Region 10 Oxon and Bucks

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Opponent	Rating	Result
Samir Khan	1615	1 - 0
Owen Wang	1509	½ - ½
Yichen Han	2464	0 - 1

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

1863 = (5588 + 400 * (1 - 1)) / 3)