Event: Formula 4 U1650

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Opponent	Rating	Result
Samuel Tracey	1637	½ - ½
Keiron Loose	1758	0 - 1
Max Dain	0	½ - ½

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

998 = (3395 + 400 * (0 - 1)) / 3)