Event: Worcestershire Rapidplay league

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Opponent	Rating	Result
Joe Rastall	1608	0 - 1
Mark Riley	1724	1 - 0
T Giles Stanton	1541	1 - 0
Jamie Steward	1584	1 - 0
Joe Rastall	1608	0 - 1
Mark Riley	1724	½ - ½
T Giles Stanton	1541	0 - 1
Jamie Steward	1584	1 - 0

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

1664 = (12914 + 400 * (4 - 3)) / 8)