Event: Worcestershire Rapidplay league

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Opponent	Rating	Result
Rob Sutton	1687	0 - 1
Nigel Hosken	2081	1 - 0
Phil Maddocks	1782	0 - 1
Martin Berridge	1692	0 - 1
Eric Horwill	1637	½ - ½
Scott Russell	1769	0 - 1
Joe Rastall	1831	0 - 1
Rob Sutton	1687	0 - 1
Nigel Hosken	2081	0 - 1
Phil Maddocks	1782	0 - 1
Martin Berridge	1692	1 - 0
Eric Horwill	1637	½ - ½
Scott Russell	1769	½ - ½
Joe Rastall	1831	0 - 1

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

1583 = (24958 + 400 * (2 - 9)) / 14)