Event: Division 2 - Weston Trophy

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Opponent	Rating	Result
Oliver Brennan	0	½ - ½
John R Mercy	152	1 - 0
Joseph B Bradey	148	½ - ½
Mikail Bayrak	0	1 - 0
Jose D Muneton	112	1 - 0
Geoff Frost	167	½ - ½
Steve B Housley	145	1 - 0
Chris G Willey	142	0 - 1

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

258 = (866 + 400 * (4 - 1)) / 8)