Event: Derby & District Division 1

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Opponent	Rating	Result
Martin Pettinger	2029	½ - ½
Paul Williams	1665	½ - ½
Luke S Alldread	1849	1 - 0
David Latham	2035	½ - ½
Steve P Retout	2021	1 - 0
Ranjit Nath	1743	1 - 0
Paul Williams	1665	1 - 0
Paul Madden	2114	½ - ½

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

2090 = (15121 + 400 * (4 - 0)) / 8)