Event: TCL Division 2

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Opponent	Rating	Result
Trefor F Thynne	158	0 - 1
Chris M Collins	150	0 - 1
Chris M Collins	150	0 - 1

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

-247 = (458 + 400 * (0 - 3)) / 3)