Event: Holly & the Ivy Chess League

Opponent Rating Result
Murray Purkis 1692 1 - 0
David A Patrick 1881 0 - 1
Gerald Cuaresma 1600 0 - 1
Steve Westmoreland 148 0 - 1
Bien Cuaresma 1714 ½ - ½
David A Patrick 1868 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1351 = (8903 + 400 * (1 - 3)) / 6)

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