Event: Woodhouse Cup

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Opponent	Rating	Result
Mike R Stokes	188	1 - 0
Steve R Hodge	189	0 - 1
Eric D Gardiner	180	0 - 1
Richard D Hardy	174	1 - 0
Robert Starley	194	0 - 1
Mark D Crowther	185	1 - 0
R Michael Round	167	1 - 0
Michael D Johnson	169	½ - ½

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

231 = (1446 + 400 * (4 - 3)) / 8)