Event: NCCA League Division 4

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Opponent	Rating	Result
Jonathan R Reeve	1631	0 - 1
Olly Shaw	1510	½ - ½
James Woodburn	1396	½ - ½
George Lyall	1350	0 - 1
Tony Piper	1387	0 - 1
Conner Reynolds	1450	1 - 0
Brian J Cunningham	1600	½ - ½

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

1361 = (10324 + 400 * (1 - 3)) / 7)