Event: Worcestershire Challengers' League

Opponent Rating Result
Paul B Sharratt 1729 ½ - ½
Scott Oxtoby 1651 0 - 1
Phil Austin 1734 ½ - ½
Gavin Cartwright 1846 0 - 1
Chetan Mutagekar 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1152 = (6960 + 400 * (0 - 3)) / 5)

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