Event: MID County / Lewis Cup

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Opponent	Rating	Result
Kevin Smyth	165	1 - 0
R Alan Barton	183	½ - ½
David R Heath	146	1 - 0
Trefor H Owens	167	1 - 0
Kevin Smyth	165	0 - 1
Andrew C Waters	161	0 - 1
Peter Dirmauskas	135	1 - 0
D Ian Calvert	177	½ - ½

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

262 = (1299 + 400 * (4 - 2)) / 8)