Event: SCCU Under 14 / U1700 league

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Opponent	Rating	Result
Yichen Xiong	1157	½ - ½
Indra Jatin Luthia	1383	½ - ½

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

1270 = (2540 + 400 * (0 - 0)) / 2)