Event: Division 4 - Under 6000

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Opponent	Rating	Result
Richard Brenton	1574	1 - 0
Ayden Small	1300	1 - 0
Richard Brenton	1574	0 - 1

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

1616 = (4448 + 400 * (2 - 1)) / 3)