Event: Worcestershire Challengers' League

Opponent Rating Result
Stephen V Woodhouse 1888 ½ - ½
Joe Rastall 1831 1 - 0
Paul B Sharratt 1729 0 - 1
Stephen V Woodhouse 1888 ½ - ½
Seamus Flynn 1608 1 - 0
Eric Horwill 1637 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1830 = (10581 + 400 * (2 - 1)) / 6)

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