Event: 4 Board League A

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Opponent	Rating	Result
Les Johnson	1688	1 - 0
Phil R Watson	2193	0 - 1
Robert Pells	1680	1 - 0
Phil R Watson	2195	0 - 1

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

1939 = (7756 + 400 * (2 - 2)) / 4)