Event: Essex OL Open Championship

Opponent Rating Result
Jay Sharman 1578 0 - 1
Tom A Barton 1911 ½ - ½
Martin Van Tol 1803 1 - 0
Robin Slade 1995 1 - 0
Andrew P Lewis 2310 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1999 = (9597 + 400 * (2 - 1)) / 5)

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