Event: Summer League (Pool A)

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Opponent	Rating	Result
Peter Nelson	1578	0 - 1
Tim J Bateman	1274	1 - 0
James Tuck	0	1 - 0
Rhys Perry	1730	1 - 0
Madeleine Dupree	1257	0 - 1
Peter Nelson	1578	0 - 1
Tim J Bateman	1274	1 - 0
James Tuck	0	0 - 1
Rhys Perry	1730	0 - 1
Madeleine Dupree	1257	1 - 0

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

1168 = (11678 + 400 * (5 - 5)) / 10)