Event: Division 3

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Opponent	Rating	Result
Charlie Wainwright	1573	0 - 1
Greg Harding	1570	0 - 1
Alex Leggat	1601	0 - 1
Derek Ludlam	1574	½ - ½
Carl Monk	1677	0 - 1
Nick Hill	1092	1 - 0
Jatinder Singh	1314	1 - 0
Loganigilesh Karthik	1465	½ - ½

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

1383 = (11866 + 400 * (2 - 4)) / 8)