Event: Division 4

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Opponent	Rating	Result
Mark McKay	1687	0 - 1
Ben A Wood	1531	0 - 1
Dave L Ramsey	1612	½ - ½
Stanley Johnson	1503	0 - 1
Dalil Benchebra	0	½ - ½
Dennis A White	1547	0 - 1
David Stewardson	1614	1 - 0
Antonio Stipanovic	1624	½ - ½

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

1240 = (11118 + 400 * (1 - 4)) / 8)