Event: Dave Nicholas Summer League

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Opponent	Rating	Result
Steve J Dyer	135	0 - 1
Matthew Reekie-Black	115	1 - 0
Vince Southcott	76	1 - 0
Tim J Bateman	71	1 - 0
Steve J Dyer	135	½ - ½
Matthew Reekie-Black	115	0 - 1
Vince Southcott	76	1 - 0
Tim J Bateman	71	1 - 0

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

249 = (794 + 400 * (5 - 2)) / 8)