Event: 4 Board League A

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Opponent	Rating	Result
Barry Thompson	1218	0 - 1
Greg Billenness	1729	0 - 1
Simon Johnson	1805	0 - 1

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

1184 = (4752 + 400 * (0 - 3)) / 3)