Event: Division 4

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Opponent	Rating	Result
Dennis A White	1531	0 - 1
Steven Eggleston	1597	½ - ½
Steven Nesworthy	1418	0 - 1
Antonio Stipanovic	1614	0 - 1
David Pritchard	1541	0 - 1
David Pritchard	1481	0 - 1
Ray Garside	1494	1 - 0
John Thomas	1242	½ - ½

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

1290 = (11918 + 400 * (1 - 5)) / 8)