Event: Summer League (Pool A)

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Opponent	Rating	Result
Joe Ingram	1843	0 - 1
Dave Tomlin	1433	1 - 0
Patrick Baker	1781	½ - ½
Dave R Wingrove	1376	1 - 0
Joe Ingram	1843	1 - 0
Dave Tomlin	1433	1 - 0
Patrick Baker	1781	1 - 0
Dave R Wingrove	1376	1 - 0

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

1858 = (12866 + 400 * (6 - 1)) / 8)