Event: League Division 3

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Opponent	Rating	Result
Keith Darley	1582	1 - 0
Howard Brears	1647	½ - ½
John G Marsh	0	½ - ½
John Wheatley	0	1 - 0
S Neil Bolton	1357	1 - 0
Charlie Barton	0	1 - 0
John Light	1376	0 - 1
Pietro Convalle	1494	1 - 0
Neil Griffiths	1565	½ - ½

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

1180 = (9021 + 400 * (5 - 1)) / 9)